90013247 has 8 divisors (see below), whose sum is σ = 92165232. Its totient is φ = 87883200.

The previous prime is 90013229. The next prime is 90013309. The reversal of 90013247 is 74231009.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90013247 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 (90013747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2972 + ... + 13742.

It is an arithmetic number, because the mean of its divisors is an integer number (11520654).

Almost surely, 2^90013247 is an apocalyptic number.

90013247 is a deficient number, since it is larger than the sum of its proper divisors (2151985).

90013247 is a wasteful number, since it uses less digits than its factorization.

90013247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10969.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 90013247 is about 9487.5311330187. The cubic root of 90013247 is about 448.1624606766.

The spelling of 90013247 in words is "ninety million, thirteen thousand, two hundred forty-seven".