104891905 has 16 divisors (see below), whose sum is σ = 127296000. Its totient is φ = 82969920.

The previous prime is 104891893. The next prime is 104891909. The reversal of 104891905 is 509198401.

It is not a de Polignac number, because 104891905 - 2⁹ = 104891393 is a prime.

It is a super-2 number, since 2×104891905² = 22004623469058050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104891909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269451 + ... + 269839.

It is an arithmetic number, because the mean of its divisors is an integer number (7956000).

Almost surely, 2^104891905 is an apocalyptic number.

It is an amenable number.

104891905 is a deficient number, since it is larger than the sum of its proper divisors (22404095).

104891905 is a wasteful number, since it uses less digits than its factorization.

104891905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 104891905 is about 10241.6749118491. The cubic root of 104891905 is about 471.6074506577.

The spelling of 104891905 in words is "one hundred four million, eight hundred ninety-one thousand, nine hundred five".