72494879 has 4 divisors (see below), whose sum is σ = 72523080. Its totient is φ = 72466680.

The previous prime is 72494819. The next prime is 72494897. The reversal of 72494879 is 97849427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97849427 = 13 ⋅7526879.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72494879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72494819) 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, 9809 + ... + 15530.

It is an arithmetic number, because the mean of its divisors is an integer number (18130770).

Almost surely, 2^72494879 is an apocalyptic number.

72494879 is a deficient number, since it is larger than the sum of its proper divisors (28201).

72494879 is a wasteful number, since it uses less digits than its factorization.

72494879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28200.

The product of its digits is 1016064, while the sum is 50.

The square root of 72494879 is about 8514.3924621784. The cubic root of 72494879 is about 416.9677278745.

The spelling of 72494879 in words is "seventy-two million, four hundred ninety-four thousand, eight hundred seventy-nine".