72879879 has 8 divisors (see below), whose sum is σ = 97520112. Its totient is φ = 48413120.

The previous prime is 72879857. The next prime is 72879887. The reversal of 72879879 is 97897827.

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

It is a cyclic number.

It is not a de Polignac number, because 72879879 - 2¹² = 72875783 is a prime.

It is a super-2 number, since 2×72879879² = 10622953526109282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72879179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42384 + ... + 44069.

It is an arithmetic number, because the mean of its divisors is an integer number (12190014).

Almost surely, 2^72879879 is an apocalyptic number.

72879879 is a deficient number, since it is larger than the sum of its proper divisors (24640233).

72879879 is a wasteful number, since it uses less digits than its factorization.

72879879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86737.

The product of its digits is 3556224, while the sum is 57.

The square root of 72879879 is about 8536.9713013457. The cubic root of 72879879 is about 417.7045579870.

The spelling of 72879879 in words is "seventy-two million, eight hundred seventy-nine thousand, eight hundred seventy-nine".