90472669 has 18 divisors (see below), whose sum is σ = 106883322. Its totient is φ = 76356000.

The previous prime is 90472649. The next prime is 90472687. The reversal of 90472669 is 96627409.

It can be written as a sum of positive squares in 3 ways, for example, as 32148900 + 58323769 = 5670^2 + 7637^2 .

It is not a de Polignac number, because 90472669 - 2⁵ = 90472637 is a prime.

It is a super-2 number, since 2×90472669² = 16370607671967122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90472649) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 499759 + ... + 499939.

Almost surely, 2^90472669 is an apocalyptic number.

It is an amenable number.

90472669 is a deficient number, since it is larger than the sum of its proper divisors (16410653).

90472669 is a wasteful number, since it uses less digits than its factorization.

90472669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 90472669 is about 9511.7122012811. The cubic root of 90472669 is about 448.9236315702.

The spelling of 90472669 in words is "ninety million, four hundred seventy-two thousand, six hundred sixty-nine".