90409000762 has 12 divisors (see below), whose sum is σ = 136178722638. Its totient is φ = 45016872000.

The previous prime is 90409000751. The next prime is 90409000763. The reversal of 90409000762 is 26700090409.

It can be written as a sum of positive squares in 3 ways, for example, as 89808701761 + 600299001 = 299681^2 + 24501^2 .

It is not an unprimeable number, because it can be changed into a prime (90409000763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 272989 + ... + 505312.

Almost surely, 2^90409000762 is an apocalyptic number.

90409000762 is a deficient number, since it is larger than the sum of its proper divisors (45769721876).

90409000762 is an equidigital number, since it uses as much as digits as its factorization.

90409000762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778785 (or 778544 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 90409000762 in words is "ninety billion, four hundred nine million, seven hundred sixty-two", and thus it is an aban number.