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104912917 = 531979489
BaseRepresentation
bin1100100000011…
…01100000010101
321022102010110121
412100031200111
5203324203132
614224351541
72412513364
oct620154025
9238363417
10104912917
115424769a
122b1755b1
1318973a65
14dd0d7db
159325497
hex640d815

104912917 has 4 divisors (see below), whose sum is σ = 106892460. Its totient is φ = 102933376.

The previous prime is 104912903. The next prime is 104912921. The reversal of 104912917 is 719219401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51710481 + 53202436 = 7191^2 + 7294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-104912917 is a prime.

It is a super-2 number, since 2×1049129172 = 22013440306897778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104912957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989692 + ... + 989797.

It is an arithmetic number, because the mean of its divisors is an integer number (26723115).

Almost surely, 2104912917 is an apocalyptic number.

It is an amenable number.

104912917 is a deficient number, since it is larger than the sum of its proper divisors (1979543).

104912917 is an equidigital number, since it uses as much as digits as its factorization.

104912917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979542.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 104912917 is about 10242.7006692571. The cubic root of 104912917 is about 471.6389394370.

The spelling of 104912917 in words is "one hundred four million, nine hundred twelve thousand, nine hundred seventeen".

Divisors: 1 53 1979489 104912917