90931373 has 8 divisors (see below), whose sum is σ = 98019768. Its totient is φ = 83856384.

The previous prime is 90931367. The next prime is 90931381. The reversal of 90931373 is 37313909.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50951044 + 39980329 = 7138^2 + 6323^2 .

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 90931373 - 2⁸ = 90931117 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 (90931363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14165 + ... + 19557.

It is an arithmetic number, because the mean of its divisors is an integer number (12252471).

Almost surely, 2^90931373 is an apocalyptic number.

It is an amenable number.

90931373 is a deficient number, since it is larger than the sum of its proper divisors (7088395).

90931373 is a wasteful number, since it uses less digits than its factorization.

90931373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 90931373 is about 9535.7943035701. The cubic root of 90931373 is about 449.6810464116.

The spelling of 90931373 in words is "ninety million, nine hundred thirty-one thousand, three hundred seventy-three".