90013249 has 8 divisors (see below), whose sum is σ = 95479560. Its totient is φ = 84566016.

The previous prime is 90013229. The next prime is 90013309. The reversal of 90013249 is 94231009.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8020224 + 81993025 = 2832^2 + 9055^2 .

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 90013249 - 2²⁵ = 56458817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90013229) 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, 5617 + ... + 14545.

It is an arithmetic number, because the mean of its divisors is an integer number (11934945).

Almost surely, 2^90013249 is an apocalyptic number.

It is an amenable number.

90013249 is a deficient number, since it is larger than the sum of its proper divisors (5466311).

90013249 is a wasteful number, since it uses less digits than its factorization.

90013249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 90013249 is about 9487.5312384202. The cubic root of 90013249 is about 448.1624639958.

The spelling of 90013249 in words is "ninety million, thirteen thousand, two hundred forty-nine".