90574489 has 2 divisors, whose sum is σ = 90574490. Its totient is φ = 90574488.

The previous prime is 90574457. The next prime is 90574513. The reversal of 90574489 is 98447509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76825225 + 13749264 = 8765^2 + 3708^2 .

It is a cyclic number.

It is not a de Polignac number, because 90574489 - 2⁵ = 90574457 is a prime.

It is a super-2 number, since 2×90574489² = 16407476115222242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90574889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45287244 + 45287245.

It is an arithmetic number, because the mean of its divisors is an integer number (45287245).

Almost surely, 2^90574489 is an apocalyptic number.

It is an amenable number.

90574489 is a deficient number, since it is larger than the sum of its proper divisors (1).

90574489 is an equidigital number, since it uses as much as digits as its factorization.

90574489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 90574489 is about 9517.0630448684. The cubic root of 90574489 is about 449.0919780551.

The spelling of 90574489 in words is "ninety million, five hundred seventy-four thousand, four hundred eighty-nine".