90876709 has 16 divisors (see below), whose sum is σ = 115716096. Its totient is φ = 69303600.

The previous prime is 90876701. The next prime is 90876719. The reversal of 90876709 is 90767809.

It is a cyclic number.

It is not a de Polignac number, because 90876709 - 2³ = 90876701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90876701) 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, 8937 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (7232256).

Almost surely, 2^90876709 is an apocalyptic number.

It is an amenable number.

90876709 is a deficient number, since it is larger than the sum of its proper divisors (24839387).

90876709 is a wasteful number, since it uses less digits than its factorization.

90876709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25176.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 90876709 is about 9532.9276195721. The cubic root of 90876709 is about 449.5909187644.

Subtracting from 90876709 its reverse (90767809), we obtain a square (108900 = 330²).

The spelling of 90876709 in words is "ninety million, eight hundred seventy-six thousand, seven hundred nine".