90489700284 has 24 divisors (see below), whose sum is σ = 215635031808. Its totient is φ = 29521462320.

The previous prime is 90489700277. The next prime is 90489700303. The reversal of 90489700284 is 48200798409.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80220802 + ... + 80221929.

It is an arithmetic number, because the mean of its divisors is an integer number (8984792992).

Almost surely, 2^90489700284 is an apocalyptic number.

90489700284 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

90489700284 is an abundant number, since it is smaller than the sum of its proper divisors (125145331524).

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

90489700284 is a wasteful number, since it uses less digits than its factorization.

90489700284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160442785 (or 160442783 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 90489700284 in words is "ninety billion, four hundred eighty-nine million, seven hundred thousand, two hundred eighty-four".