90459599 has 2 divisors, whose sum is σ = 90459600. Its totient is φ = 90459598.

The previous prime is 90459563. The next prime is 90459617. The reversal of 90459599 is 99595409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90459599 - 2²⁴ = 73682383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90459199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45229799 + 45229800.

It is an arithmetic number, because the mean of its divisors is an integer number (45229800).

Almost surely, 2^90459599 is an apocalyptic number.

90459599 is a deficient number, since it is larger than the sum of its proper divisors (1).

90459599 is an equidigital number, since it uses as much as digits as its factorization.

90459599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 656100, while the sum is 50.

The square root of 90459599 is about 9511.0251287650. The cubic root of 90459599 is about 448.9020128335.

The spelling of 90459599 in words is "ninety million, four hundred fifty-nine thousand, five hundred ninety-nine".