90975549 has 16 divisors (see below), whose sum is σ = 139231872. Its totient is φ = 51760128.

The previous prime is 90975541. The next prime is 90975569. The reversal of 90975549 is 94557909.

It is not a de Polignac number, because 90975549 - 2³ = 90975541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90975498 and 90975507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90975541) 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, 4404 + ... + 14189.

It is an arithmetic number, because the mean of its divisors is an integer number (8701992).

Almost surely, 2^90975549 is an apocalyptic number.

It is an amenable number.

90975549 is a deficient number, since it is larger than the sum of its proper divisors (48256323).

90975549 is a wasteful number, since it uses less digits than its factorization.

90975549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18836.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 90975549 is about 9538.1103474430. The cubic root of 90975549 is about 449.7538555100.

The spelling of 90975549 in words is "ninety million, nine hundred seventy-five thousand, five hundred forty-nine".