764939941 has 4 divisors (see below), whose sum is σ = 766180332. Its totient is φ = 763699552.

The previous prime is 764939933. The next prime is 764939947. The reversal of 764939941 is 149939467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149939467 = 31 ⋅4836757.

It can be written as a sum of positive squares in 2 ways, for example, as 211702500 + 553237441 = 14550^2 + 23521^2 .

It is a cyclic number.

It is not a de Polignac number, because 764939941 - 2³ = 764939933 is a prime.

It is a super-2 number, since 2×764939941² = 1170266226674166962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764939947) 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, 619270 + ... + 620503.

It is an arithmetic number, because the mean of its divisors is an integer number (191545083).

Almost surely, 2^764939941 is an apocalyptic number.

It is an amenable number.

764939941 is a deficient number, since it is larger than the sum of its proper divisors (1240391).

764939941 is a wasteful number, since it uses less digits than its factorization.

764939941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240390.

The product of its digits is 1469664, while the sum is 52.

The square root of 764939941 is about 27657.5476317044. The cubic root of 764939941 is about 914.5534927177.

The spelling of 764939941 in words is "seven hundred sixty-four million, nine hundred thirty-nine thousand, nine hundred forty-one".