104894639 has 2 divisors, whose sum is σ = 104894640. Its totient is φ = 104894638.

The previous prime is 104894617. The next prime is 104894663. The reversal of 104894639 is 936498401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104894639 - 2²⁴ = 88117423 is a prime.

It is a super-2 number, since 2×104894639² = 22005770581880642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 104894639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104894609) 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 as a sum of consecutive naturals, namely, 52447319 + 52447320.

It is an arithmetic number, because the mean of its divisors is an integer number (52447320).

Almost surely, 2^104894639 is an apocalyptic number.

104894639 is a deficient number, since it is larger than the sum of its proper divisors (1).

104894639 is an equidigital number, since it uses as much as digits as its factorization.

104894639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 104894639 is about 10241.8083852413. The cubic root of 104894639 is about 471.6115480936.

The spelling of 104894639 in words is "one hundred four million, eight hundred ninety-four thousand, six hundred thirty-nine".