90995539 has 4 divisors (see below), whose sum is σ = 91015056. Its totient is φ = 90976024.

The previous prime is 90995519. The next prime is 90995561. The reversal of 90995539 is 93559909.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90995539 - 2⁵ = 90995507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90995492 and 90995501.

It is not an unprimeable number, because it can be changed into a prime (90995519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797 + ... + 13609.

It is an arithmetic number, because the mean of its divisors is an integer number (22753764).

Almost surely, 2^90995539 is an apocalyptic number.

90995539 is a deficient number, since it is larger than the sum of its proper divisors (19517).

90995539 is a wasteful number, since it uses less digits than its factorization.

90995539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19516.

The product of its (nonzero) digits is 492075, while the sum is 49.

The square root of 90995539 is about 9539.1581913710. The cubic root of 90995539 is about 449.7867944745.

The spelling of 90995539 in words is "ninety million, nine hundred ninety-five thousand, five hundred thirty-nine".