90459897 has 16 divisors (see below), whose sum is σ = 137299968. Its totient is φ = 52440080.

The previous prime is 90459869. The next prime is 90459911. The reversal of 90459897 is 79895409.

It is a happy number.

It is not a de Polignac number, because 90459897 - 2¹⁹ = 89935609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90459847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58833 + ... + 60350.

It is an arithmetic number, because the mean of its divisors is an integer number (8581248).

Almost surely, 2^90459897 is an apocalyptic number.

It is an amenable number.

90459897 is a deficient number, since it is larger than the sum of its proper divisors (46840071).

90459897 is a wasteful number, since it uses less digits than its factorization.

90459897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119220.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 90459897 is about 9511.0407947816. The cubic root of 90459897 is about 448.9025057705.

The spelling of 90459897 in words is "ninety million, four hundred fifty-nine thousand, eight hundred ninety-seven".