769949977 has 4 divisors (see below), whose sum is σ = 810473680. Its totient is φ = 729426276.

The previous prime is 769949969. The next prime is 769949987. The reversal of 769949977 is 779949967.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 769949977 - 2³ = 769949969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769949987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20261823 + ... + 20261860.

It is an arithmetic number, because the mean of its divisors is an integer number (202618420).

Almost surely, 2^769949977 is an apocalyptic number.

It is an amenable number.

769949977 is a deficient number, since it is larger than the sum of its proper divisors (40523703).

769949977 is a wasteful number, since it uses less digits than its factorization.

769949977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40523702.

The product of its digits is 54010152, while the sum is 67.

The square root of 769949977 is about 27747.9724844897. The cubic root of 769949977 is about 916.5457967940.

The spelling of 769949977 in words is "seven hundred sixty-nine million, nine hundred forty-nine thousand, nine hundred seventy-seven".