90435406408 has 32 divisors (see below), whose sum is σ = 178664032800. Its totient is φ = 42796280448.

The previous prime is 90435406387. The next prime is 90435406417. The reversal of 90435406408 is 80460453409.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130966 + ... + 444997.

It is an arithmetic number, because the mean of its divisors is an integer number (5583251025).

Almost surely, 2^90435406408 is an apocalyptic number.

It is an amenable number.

90435406408 is a deficient number, since it is larger than the sum of its proper divisors (88228626392).

90435406408 is a wasteful number, since it uses less digits than its factorization.

90435406408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577021 (or 577017 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 90435406408 in words is "ninety billion, four hundred thirty-five million, four hundred six thousand, four hundred eight".