104457989 has 2 divisors, whose sum is σ = 104457990. Its totient is φ = 104457988.

The previous prime is 104457967. The next prime is 104458009. The reversal of 104457989 is 989754401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69588964 + 34869025 = 8342^2 + 5905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104457989 is a prime.

It is a super-2 number, since 2×104457989² = 21822942931848242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104450989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52228994 + 52228995.

It is an arithmetic number, because the mean of its divisors is an integer number (52228995).

Almost surely, 2^104457989 is an apocalyptic number.

It is an amenable number.

104457989 is a deficient number, since it is larger than the sum of its proper divisors (1).

104457989 is an equidigital number, since it uses as much as digits as its factorization.

104457989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 104457989 is about 10220.4691183918. The cubic root of 104457989 is about 470.9562378671.

The spelling of 104457989 in words is "one hundred four million, four hundred fifty-seven thousand, nine hundred eighty-nine".