9072639 has 12 divisors (see below), whose sum is σ = 13182936. Its totient is φ = 6012432.

The previous prime is 9072631. The next prime is 9072643. The reversal of 9072639 is 9362709.

It is not a de Polignac number, because 9072639 - 2³ = 9072631 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

9072639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9072631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1357 + ... + 4470.

It is an arithmetic number, because the mean of its divisors is an integer number (1098578).

Almost surely, 2^9072639 is an apocalyptic number.

9072639 is a deficient number, since it is larger than the sum of its proper divisors (4110297).

9072639 is a wasteful number, since it uses less digits than its factorization.

9072639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006 (or 6003 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 9072639 is about 3012.0821701939. The cubic root of 9072639 is about 208.5664953618.

The spelling of 9072639 in words is "nine million, seventy-two thousand, six hundred thirty-nine".