72878959 has 2 divisors, whose sum is σ = 72878960. Its totient is φ = 72878958.

The previous prime is 72878947. The next prime is 72879007. The reversal of 72878959 is 95987827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72878959 - 2⁷ = 72878831 is a prime.

It is a super-2 number, since 2×72878959² = 10622685329847362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72878909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36439479 + 36439480.

It is an arithmetic number, because the mean of its divisors is an integer number (36439480).

Almost surely, 2^72878959 is an apocalyptic number.

72878959 is a deficient number, since it is larger than the sum of its proper divisors (1).

72878959 is an equidigital number, since it uses as much as digits as its factorization.

72878959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The square root of 72878959 is about 8536.9174178974. The cubic root of 72878959 is about 417.7028003468.

It can be divided in two parts, 72878 and 959, that added together give a palindrome (73837).

The spelling of 72878959 in words is "seventy-two million, eight hundred seventy-eight thousand, nine hundred fifty-nine".