72489179 has 12 divisors (see below), whose sum is σ = 86605344. Its totient is φ = 60452784.

The previous prime is 72489149. The next prime is 72489223. The reversal of 72489179 is 97198427.

It is a de Polignac number, because none of the positive numbers 2^k-72489179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72489119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18179 + ... + 21804.

It is an arithmetic number, because the mean of its divisors is an integer number (7217112).

Almost surely, 2^72489179 is an apocalyptic number.

72489179 is a deficient number, since it is larger than the sum of its proper divisors (14116165).

72489179 is a wasteful number, since it uses less digits than its factorization.

72489179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40034 (or 40027 counting only the distinct ones).

The product of its digits is 254016, while the sum is 47.

The square root of 72489179 is about 8514.0577282516. The cubic root of 72489179 is about 416.9567993861.

The spelling of 72489179 in words is "seventy-two million, four hundred eighty-nine thousand, one hundred seventy-nine".