90299477072 has 40 divisors (see below), whose sum is σ = 200047987776. Its totient is φ = 38680586496.

The previous prime is 90299477071. The next prime is 90299477087. The reversal of 90299477072 is 27077499209.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 90299476999 and 90299477017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90299477071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28148 + ... + 425900.

Almost surely, 2^90299477072 is an apocalyptic number.

It is an amenable number.

90299477072 is an abundant number, since it is smaller than the sum of its proper divisors (109748510704).

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

90299477072 is a wasteful number, since it uses less digits than its factorization.

90299477072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399795 (or 399789 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 56.

The spelling of 90299477072 in words is "ninety billion, two hundred ninety-nine million, four hundred seventy-seven thousand, seventy-two".