90998759 has 8 divisors (see below), whose sum is σ = 92191440. Its totient is φ = 89812800.

The previous prime is 90998701. The next prime is 90998777. The reversal of 90998759 is 95789909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90998759 - 2²⁰ = 89950183 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 (90998359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29144 + ... + 32114.

It is an arithmetic number, because the mean of its divisors is an integer number (11523930).

Almost surely, 2^90998759 is an apocalyptic number.

90998759 is a deficient number, since it is larger than the sum of its proper divisors (1192681).

90998759 is a wasteful number, since it uses less digits than its factorization.

90998759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361.

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

The square root of 90998759 is about 9539.3269678736. The cubic root of 90998759 is about 449.7920998496.

The spelling of 90998759 in words is "ninety million, nine hundred ninety-eight thousand, seven hundred fifty-nine".