76938839 has 4 divisors (see below), whose sum is σ = 76978824. Its totient is φ = 76898856.

The previous prime is 76938833. The next prime is 76938853. The reversal of 76938839 is 93883967.

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-76938839 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 (76938833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16952 + ... + 21005.

It is an arithmetic number, because the mean of its divisors is an integer number (19244706).

Almost surely, 2^76938839 is an apocalyptic number.

76938839 is a deficient number, since it is larger than the sum of its proper divisors (39985).

76938839 is a wasteful number, since it uses less digits than its factorization.

76938839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39984.

The product of its digits is 1959552, while the sum is 53.

The square root of 76938839 is about 8771.4787236817. The cubic root of 76938839 is about 425.3194166238.

It can be divided in two parts, 76938 and 839, that added together give a palindrome (77777).

The spelling of 76938839 in words is "seventy-six million, nine hundred thirty-eight thousand, eight hundred thirty-nine".