104989931 has 2 divisors, whose sum is σ = 104989932. Its totient is φ = 104989930.

The previous prime is 104989921. The next prime is 104989949. The reversal of 104989931 is 139989401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104989931 - 2⁶ = 104989867 is a prime.

It is a super-2 number, since 2×104989931² = 22045771222769522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104989921) 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, 52494965 + 52494966.

It is an arithmetic number, because the mean of its divisors is an integer number (52494966).

Almost surely, 2^104989931 is an apocalyptic number.

104989931 is a deficient number, since it is larger than the sum of its proper divisors (1).

104989931 is an equidigital number, since it uses as much as digits as its factorization.

104989931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 104989931 is about 10246.4594372886. The cubic root of 104989931 is about 471.7543174033.

The spelling of 104989931 in words is "one hundred four million, nine hundred eighty-nine thousand, nine hundred thirty-one".