769312385 has 4 divisors (see below), whose sum is σ = 923174868. Its totient is φ = 615449904.

The previous prime is 769312381. The next prime is 769312391. The reversal of 769312385 is 583213967.

769312385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 568154896 + 201157489 = 23836^2 + 14183^2 .

It is a cyclic number.

It is not a de Polignac number, because 769312385 - 2² = 769312381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769312381) 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, 76931234 + ... + 76931243.

It is an arithmetic number, because the mean of its divisors is an integer number (230793717).

Almost surely, 2^769312385 is an apocalyptic number.

It is an amenable number.

769312385 is a deficient number, since it is larger than the sum of its proper divisors (153862483).

769312385 is a wasteful number, since it uses less digits than its factorization.

769312385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153862482.

The product of its digits is 272160, while the sum is 44.

The square root of 769312385 is about 27736.4811214400. The cubic root of 769312385 is about 916.2927311545.

The spelling of 769312385 in words is "seven hundred sixty-nine million, three hundred twelve thousand, three hundred eighty-five".