764442939 has 24 divisors (see below), whose sum is σ = 1105861680. Its totient is φ = 469502592.

The previous prime is 764442907. The next prime is 764442967. The reversal of 764442939 is 939244467.

It is not a de Polignac number, because 764442939 - 2⁵ = 764442907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764440939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329917 + ... + 332225.

It is an arithmetic number, because the mean of its divisors is an integer number (46077570).

Almost surely, 2^764442939 is an apocalyptic number.

764442939 is a deficient number, since it is larger than the sum of its proper divisors (341418741).

764442939 is a wasteful number, since it uses less digits than its factorization.

764442939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991 (or 2978 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 48.

The square root of 764442939 is about 27648.5612464736. The cubic root of 764442939 is about 914.3553798257.

The spelling of 764442939 in words is "seven hundred sixty-four million, four hundred forty-two thousand, nine hundred thirty-nine".