77239854 has 12 divisors (see below), whose sum is σ = 167353056. Its totient is φ = 25746612.

The previous prime is 77239849. The next prime is 77239861. The reversal of 77239854 is 45893277.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 2145534 + ... + 2145569.

It is an arithmetic number, because the mean of its divisors is an integer number (13946088).

Almost surely, 2^77239854 is an apocalyptic number.

77239854 is an abundant number, since it is smaller than the sum of its proper divisors (90113202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77239854 is a wasteful number, since it uses less digits than its factorization.

77239854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291111 (or 4291108 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 77239854 is about 8788.6207108966. The cubic root of 77239854 is about 425.8733671085.

The spelling of 77239854 in words is "seventy-seven million, two hundred thirty-nine thousand, eight hundred fifty-four".