90945944 has 8 divisors (see below), whose sum is σ = 170523660. Its totient is φ = 45472968.

The previous prime is 90945871. The next prime is 90945947. The reversal of 90945944 is 44954909.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×90945944² = 16542329460102272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90945895 and 90945904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90945947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5684114 + ... + 5684129.

Almost surely, 2^90945944 is an apocalyptic number.

It is an amenable number.

90945944 is a deficient number, since it is larger than the sum of its proper divisors (79577716).

90945944 is a wasteful number, since it uses less digits than its factorization.

90945944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368249 (or 11368245 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 90945944 is about 9536.5582890265. The cubic root of 90945944 is about 449.7050643509.

The spelling of 90945944 in words is "ninety million, nine hundred forty-five thousand, nine hundred forty-four".