90497169 has 45 divisors (see below), whose sum is σ = 158306841. Its totient is φ = 51370200.

The previous prime is 90497161. The next prime is 90497189. The reversal of 90497169 is 96179409.

The square root of 90497169 is 9513.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 90497169 - 2³ = 90497161 is a prime.

It is a super-2 number, since 2×90497169² = 16379475194029122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90497161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 599244 + ... + 599394.

Almost surely, 2^90497169 is an apocalyptic number.

90497169 is the 9513-rd square number.

90497169 is the 4757-th centered octagonal number.

It is an amenable number.

90497169 is a deficient number, since it is larger than the sum of its proper divisors (67809672).

90497169 is an equidigital number, since it uses as much as digits as its factorization.

90497169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The cubic root of 90497169 is about 448.9641507547.

The spelling of 90497169 in words is "ninety million, four hundred ninety-seven thousand, one hundred sixty-nine".