90798959 has 4 divisors (see below), whose sum is σ = 91036416. Its totient is φ = 90561504.

The previous prime is 90798949. The next prime is 90798977. The reversal of 90798959 is 95989709.

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 90798959 - 2⁴ = 90798943 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 (90798949) 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, 118154 + ... + 118919.

It is an arithmetic number, because the mean of its divisors is an integer number (22759104).

Almost surely, 2^90798959 is an apocalyptic number.

90798959 is a deficient number, since it is larger than the sum of its proper divisors (237457).

90798959 is a wasteful number, since it uses less digits than its factorization.

90798959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237456.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 90798959 is about 9528.8487762164. The cubic root of 90798959 is about 449.4626656330.

The spelling of 90798959 in words is "ninety million, seven hundred ninety-eight thousand, nine hundred fifty-nine".