90117049 has 9 divisors (see below), whose sum is σ = 99169189. Its totient is φ = 81829660.

The previous prime is 90117037. The next prime is 90117073. The reversal of 90117049 is 94071109.

The square root of 90117049 is 9493.

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

It is not a de Polignac number, because 90117049 - 2¹⁹ = 89592761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90117049.

It is not an unprimeable number, because it can be changed into a prime (90117449) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 103992 + ... + 104854.

Almost surely, 2^90117049 is an apocalyptic number.

90117049 is the 9493-rd square number.

90117049 is the 4747-th centered octagonal number.

It is an amenable number.

90117049 is a deficient number, since it is larger than the sum of its proper divisors (9052140).

90117049 is an frugal number, since it uses more digits than its factorization.

90117049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The cubic root of 90117049 is about 448.3346660301.

The spelling of 90117049 in words is "ninety million, one hundred seventeen thousand, forty-nine".