90436906 has 32 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 35218176.

The previous prime is 90436901. The next prime is 90436933. The reversal of 90436906 is 60963409.

It is not an unprimeable number, because it can be changed into a prime (90436901) 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, 351 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (5307120).

Almost surely, 2^90436906 is an apocalyptic number.

90436906 is a deficient number, since it is larger than the sum of its proper divisors (79390934).

90436906 is a wasteful number, since it uses less digits than its factorization.

90436906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13158.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 90436906 is about 9509.8320700210. The cubic root of 90436906 is about 448.8644720033.

The spelling of 90436906 in words is "ninety million, four hundred thirty-six thousand, nine hundred six".