764489799 has 32 divisors (see below), whose sum is σ = 1152162240. Its totient is φ = 500898816.

The previous prime is 764489783. The next prime is 764489809. The reversal of 764489799 is 997984467.

764489799 is a `hidden beast` number, since 7 + 64 + 489 + 7 + 99 = 666.

It is not a de Polignac number, because 764489799 - 2⁴ = 764489783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764489599) 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 31 ways as a sum of consecutive naturals, for example, 781999 + ... + 782975.

It is an arithmetic number, because the mean of its divisors is an integer number (36005070).

Almost surely, 2^764489799 is an apocalyptic number.

764489799 is a deficient number, since it is larger than the sum of its proper divisors (387672441).

764489799 is a wasteful number, since it uses less digits than its factorization.

764489799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1450 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 764489799 is about 27649.4086555210. The cubic root of 764489799 is about 914.3740626319.

The spelling of 764489799 in words is "seven hundred sixty-four million, four hundred eighty-nine thousand, seven hundred ninety-nine".