90939013 has 8 divisors (see below), whose sum is σ = 99374400. Its totient is φ = 82531680.

The previous prime is 90939011. The next prime is 90939019. The reversal of 90939013 is 31093909.

It is a happy number.

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

It is not a de Polignac number, because 90939013 - 2¹ = 90939011 is a prime.

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 90939013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90939011) 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, 88 + ... + 13486.

It is an arithmetic number, because the mean of its divisors is an integer number (12421800).

Almost surely, 2^90939013 is an apocalyptic number.

It is an amenable number.

90939013 is a deficient number, since it is larger than the sum of its proper divisors (8435387).

90939013 is a wasteful number, since it uses less digits than its factorization.

90939013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14027.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 90939013 is about 9536.1948910454. The cubic root of 90939013 is about 449.6936400372.

The spelling of 90939013 in words is "ninety million, nine hundred thirty-nine thousand, thirteen".