90047944 has 64 divisors (see below), whose sum is σ = 203120640. Its totient is φ = 36590400.

The previous prime is 90047941. The next prime is 90047989. The reversal of 90047944 is 44974009.

It is not an unprimeable number, because it can be changed into a prime (90047941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194257 + ... + 194719.

It is an arithmetic number, because the mean of its divisors is an integer number (3173760).

Almost surely, 2^90047944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90047944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101560320).

90047944 is an abundant number, since it is smaller than the sum of its proper divisors (113072696).

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

90047944 is a wasteful number, since it uses less digits than its factorization.

90047944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 90047944 is about 9489.3595147407. The cubic root of 90047944 is about 448.2200369995.

The spelling of 90047944 in words is "ninety million, forty-seven thousand, nine hundred forty-four".