104661139 has 16 divisors (see below), whose sum is σ = 120528000. Its totient is φ = 89881920.

The previous prime is 104661131. The next prime is 104661143. The reversal of 104661139 is 931166401.

It is a cyclic number.

It is not a de Polignac number, because 104661139 - 2³ = 104661131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104661139.

It is not an unprimeable number, because it can be changed into a prime (104661131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128967 + ... + 129775.

It is an arithmetic number, because the mean of its divisors is an integer number (7533000).

Almost surely, 2^104661139 is an apocalyptic number.

104661139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

104661139 is a deficient number, since it is larger than the sum of its proper divisors (15866861).

104661139 is a wasteful number, since it uses less digits than its factorization.

104661139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 104661139 is about 10230.4026802468. The cubic root of 104661139 is about 471.2613455465.

The spelling of 104661139 in words is "one hundred four million, six hundred sixty-one thousand, one hundred thirty-nine".