90796509 has 24 divisors (see below), whose sum is σ = 135038904. Its totient is φ = 58752000.

The previous prime is 90796501. The next prime is 90796523. The reversal of 90796509 is 90569709.

It can be written as a sum of positive squares in 4 ways, for example, as 7128900 + 83667609 = 2670^2 + 9147^2 .

It is not a de Polignac number, because 90796509 - 2³ = 90796501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90796501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88419 + ... + 89439.

It is an arithmetic number, because the mean of its divisors is an integer number (5626621).

Almost surely, 2^90796509 is an apocalyptic number.

It is an amenable number.

90796509 is a deficient number, since it is larger than the sum of its proper divisors (44242395).

90796509 is a wasteful number, since it uses less digits than its factorization.

90796509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 90796509 is about 9528.7202183714. The cubic root of 90796509 is about 449.4586230263.

The spelling of 90796509 in words is "ninety million, seven hundred ninety-six thousand, five hundred nine".