90986331 has 4 divisors (see below), whose sum is σ = 121315112. Its totient is φ = 60657552.

The previous prime is 90986327. The next prime is 90986341. The reversal of 90986331 is 13368909.

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

It is not a de Polignac number, because 90986331 - 2² = 90986327 is a prime.

It is a super-2 number, since 2×90986331² = 16557024857683122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90986331.

It is not an unprimeable number, because it can be changed into a prime (90986341) 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, 15164386 + ... + 15164391.

It is an arithmetic number, because the mean of its divisors is an integer number (30328778).

Almost surely, 2^90986331 is an apocalyptic number.

90986331 is a deficient number, since it is larger than the sum of its proper divisors (30328781).

90986331 is a wasteful number, since it uses less digits than its factorization.

90986331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30328780.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 90986331 is about 9538.6755369915. The cubic root of 90986331 is about 449.7716223882.

The spelling of 90986331 in words is "ninety million, nine hundred eighty-six thousand, three hundred thirty-one".