72792919 has 4 divisors (see below), whose sum is σ = 72820944. Its totient is φ = 72764896.

The previous prime is 72792913. The next prime is 72792931. The reversal of 72792919 is 91929727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91929727 = 17 ⋅5407631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72792919 is a prime.

It is a super-2 number, since 2×72792919² = 10597618113081122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72792913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9667 + ... + 15460.

It is an arithmetic number, because the mean of its divisors is an integer number (18205236).

Almost surely, 2^72792919 is an apocalyptic number.

72792919 is a deficient number, since it is larger than the sum of its proper divisors (28025).

72792919 is a wasteful number, since it uses less digits than its factorization.

72792919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28024.

The product of its digits is 142884, while the sum is 46.

The square root of 72792919 is about 8531.8766399896. The cubic root of 72792919 is about 417.5383573589.

The spelling of 72792919 in words is "seventy-two million, seven hundred ninety-two thousand, nine hundred nineteen".