90416840 has 16 divisors (see below), whose sum is σ = 203437980. Its totient is φ = 36166720.

The previous prime is 90416827. The next prime is 90416869. The reversal of 90416840 is 4861409.

It can be written as a sum of positive squares in 2 ways, for example, as 77123524 + 13293316 = 8782^2 + 3646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90416797 and 90416806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130171 + ... + 1130250.

Almost surely, 2^90416840 is an apocalyptic number.

It is an amenable number.

90416840 is an abundant number, since it is smaller than the sum of its proper divisors (113021140).

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

90416840 is a wasteful number, since it uses less digits than its factorization.

90416840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260432 (or 2260428 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 90416840 is about 9508.7769981213. The cubic root of 90416840 is about 448.8312717641.

The spelling of 90416840 in words is "ninety million, four hundred sixteen thousand, eight hundred forty".