72998459 has 8 divisors (see below), whose sum is σ = 79786368. Its totient is φ = 66487680.

The previous prime is 72998413. The next prime is 72998479. The reversal of 72998459 is 95489927.

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

It is not a de Polignac number, because 72998459 - 2²⁰ = 71949883 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 72998459.

It is not an unprimeable number, because it can be changed into a prime (72998479) 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, 68732 + ... + 69785.

It is an arithmetic number, because the mean of its divisors is an integer number (9973296).

Almost surely, 2^72998459 is an apocalyptic number.

72998459 is a deficient number, since it is larger than the sum of its proper divisors (6787909).

72998459 is a wasteful number, since it uses less digits than its factorization.

72998459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138565.

The product of its digits is 1632960, while the sum is 53.

The square root of 72998459 is about 8543.9135646377. The cubic root of 72998459 is about 417.9309788130.

The spelling of 72998459 in words is "seventy-two million, nine hundred ninety-eight thousand, four hundred fifty-nine".