90499511 has 6 divisors (see below), whose sum is σ = 91855512. Its totient is φ = 89145840.

The previous prime is 90499441. The next prime is 90499523. The reversal of 90499511 is 11599409.

It is not a de Polignac number, because 90499511 - 2¹⁰ = 90498487 is a prime.

It is a super-2 number, since 2×90499511² = 16380322982478242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90499531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79595 + ... + 80723.

It is an arithmetic number, because the mean of its divisors is an integer number (15309252).

Almost surely, 2^90499511 is an apocalyptic number.

90499511 is a deficient number, since it is larger than the sum of its proper divisors (1356001).

90499511 is an frugal number, since it uses more digits than its factorization.

With its predecessor (90499510) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1200).

90499511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 90499511 is about 9513.1230939161. The cubic root of 90499511 is about 448.9680236751.

The spelling of 90499511 in words is "ninety million, four hundred ninety-nine thousand, five hundred eleven".