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104404861 = 1137713613
BaseRepresentation
bin1100011100100…
…01011101111101
321021110022112201
412032101131331
5203211423421
614205431501
72405266231
oct616213575
9237408481
10104404861
1153a2aa10
122ab6b591
1318826732
14dc1a5c1
159274b91
hex639177d

104404861 has 16 divisors (see below), whose sum is σ = 118654848. Its totient is φ = 91022400.

The previous prime is 104404847. The next prime is 104404879. The reversal of 104404861 is 168404401.

It is a 3-Lehmer number, since φ(104404861) divides (104404861-1)3.

It is a cyclic number.

It is a Carmichael number.

It is a de Polignac number, because none of the positive numbers 2k-104404861 is a prime.

It is a deceptive number, since it divides R104404860.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104404801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27091 + ... + 30703.

It is an arithmetic number, because the mean of its divisors is an integer number (7415928).

It is a Poulet number, since it divides 2104404860-1.

Almost surely, 2104404861 is an apocalyptic number.

104404861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104404861 is a deficient number, since it is larger than the sum of its proper divisors (14249987).

104404861 is a wasteful number, since it uses less digits than its factorization.

104404861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 104404861 is about 10217.8696899109. The cubic root of 104404861 is about 470.8763805439.

The spelling of 104404861 in words is "one hundred four million, four hundred four thousand, eight hundred sixty-one".

Divisors: 1 11 37 71 407 781 2627 3613 28897 39743 133681 256523 1470491 2821753 9491351 104404861