90459690 has 32 divisors (see below), whose sum is σ = 226544256. Its totient is φ = 23073600.

The previous prime is 90459673. The next prime is 90459697. The reversal of 90459690 is 9695409.

It is a happy number.

It is a super-2 number, since 2×90459690² = 16365911029792200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90459697) 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, 64861 + ... + 66240.

It is an arithmetic number, because the mean of its divisors is an integer number (7079508).

Almost surely, 2^90459690 is an apocalyptic number.

90459690 is an abundant number, since it is smaller than the sum of its proper divisors (136084566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90459690 is a wasteful number, since it uses less digits than its factorization.

90459690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131134.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 90459690 is about 9511.0299126856. The cubic root of 90459690 is about 448.9021633614.

The spelling of 90459690 in words is "ninety million, four hundred fifty-nine thousand, six hundred ninety".