72862939 has 4 divisors (see below), whose sum is σ = 73058656. Its totient is φ = 72667224.

The previous prime is 72862931. The next prime is 72862949. The reversal of 72862939 is 93926827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93926827 = 491 ⋅191297.

It is a cyclic number.

It is not a de Polignac number, because 72862939 - 2³ = 72862931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72862931) 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, 97299 + ... + 98044.

It is an arithmetic number, because the mean of its divisors is an integer number (18264664).

Almost surely, 2^72862939 is an apocalyptic number.

72862939 is a deficient number, since it is larger than the sum of its proper divisors (195717).

72862939 is a wasteful number, since it uses less digits than its factorization.

72862939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195716.

The product of its digits is 326592, while the sum is 46.

The square root of 72862939 is about 8535.9790885405. The cubic root of 72862939 is about 417.6721921104.

The spelling of 72862939 in words is "seventy-two million, eight hundred sixty-two thousand, nine hundred thirty-nine".