769632491 has 4 divisors (see below), whose sum is σ = 776443512. Its totient is φ = 762821472.

The previous prime is 769632481. The next prime is 769632497. The reversal of 769632491 is 194236967.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194236967 = 41 ⋅4737487.

It is a cyclic number.

It is not a de Polignac number, because 769632491 - 2⁶ = 769632427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769632497) 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, 3405341 + ... + 3405566.

It is an arithmetic number, because the mean of its divisors is an integer number (194110878).

Almost surely, 2^769632491 is an apocalyptic number.

769632491 is a deficient number, since it is larger than the sum of its proper divisors (6811021).

769632491 is a wasteful number, since it uses less digits than its factorization.

769632491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811020.

The product of its digits is 489888, while the sum is 47.

The square root of 769632491 is about 27742.2510081644. The cubic root of 769632491 is about 916.4198013947.

The spelling of 769632491 in words is "seven hundred sixty-nine million, six hundred thirty-two thousand, four hundred ninety-one".