72957959 has 4 divisors (see below), whose sum is σ = 74510304. Its totient is φ = 71405616.

The previous prime is 72957947. The next prime is 72957991. The reversal of 72957959 is 95975927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72957959 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 72957959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72957559) 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, 776102 + ... + 776195.

It is an arithmetic number, because the mean of its divisors is an integer number (18627576).

Almost surely, 2^72957959 is an apocalyptic number.

72957959 is a deficient number, since it is larger than the sum of its proper divisors (1552345).

72957959 is a wasteful number, since it uses less digits than its factorization.

72957959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552344.

The product of its digits is 1786050, while the sum is 53.

The square root of 72957959 is about 8541.5431275619. The cubic root of 72957959 is about 417.8536742777.

The spelling of 72957959 in words is "seventy-two million, nine hundred fifty-seven thousand, nine hundred fifty-nine".