769636139 has 8 divisors (see below), whose sum is σ = 786999360. Its totient is φ = 752314176.

The previous prime is 769636123. The next prime is 769636141. The reversal of 769636139 is 931636967.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 769636139 - 2⁴ = 769636123 is a prime.

It is a super-3 number, since 3×769636139³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769636339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29087 + ... + 48839.

It is an arithmetic number, because the mean of its divisors is an integer number (98374920).

Almost surely, 2^769636139 is an apocalyptic number.

769636139 is a deficient number, since it is larger than the sum of its proper divisors (17363221).

769636139 is a wasteful number, since it uses less digits than its factorization.

769636139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20629.

The product of its digits is 1102248, while the sum is 50.

The square root of 769636139 is about 27742.3167561759. The cubic root of 769636139 is about 916.4212493127.

The spelling of 769636139 in words is "seven hundred sixty-nine million, six hundred thirty-six thousand, one hundred thirty-nine".