764449407 has 40 divisors (see below), whose sum is σ = 1177235136. Its totient is φ = 494097408.

The previous prime is 764449397. The next prime is 764449447. The reversal of 764449407 is 704944467.

It is not a de Polignac number, because 764449407 - 2¹⁰ = 764448383 is a prime.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764449447) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 429303 + ... + 431079.

Almost surely, 2^764449407 is an apocalyptic number.

764449407 is a deficient number, since it is larger than the sum of its proper divisors (412785729).

764449407 is a wasteful number, since it uses less digits than its factorization.

764449407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 764449407 is about 27648.6782143378. The cubic root of 764449407 is about 914.3579586247.

The spelling of 764449407 in words is "seven hundred sixty-four million, four hundred forty-nine thousand, four hundred seven".