90384547956 has 24 divisors (see below), whose sum is σ = 210905933280. Its totient is φ = 30126946272.

The previous prime is 90384547951. The next prime is 90384547993. The reversal of 90384547956 is 65974548309.

It is a self number, because there is not a number n which added to its sum of digits gives 90384547956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90384547951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178815 + ... + 461241.

It is an arithmetic number, because the mean of its divisors is an integer number (8787747220).

Almost surely, 2^90384547956 is an apocalyptic number.

It is an amenable number.

90384547956 is an abundant number, since it is smaller than the sum of its proper divisors (120521385324).

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

90384547956 is a wasteful number, since it uses less digits than its factorization.

90384547956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309103 (or 309101 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 90384547956 in words is "ninety billion, three hundred eighty-four million, five hundred forty-seven thousand, nine hundred fifty-six".