764129949 has 16 divisors (see below), whose sum is σ = 1125534720. Its totient is φ = 457245360.

The previous prime is 764129941. The next prime is 764129969. The reversal of 764129949 is 949921467.

It is a happy number.

It is not a de Polignac number, because 764129949 - 2³ = 764129941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764129941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143947 + ... + 149160.

It is an arithmetic number, because the mean of its divisors is an integer number (70345920).

Almost surely, 2^764129949 is an apocalyptic number.

764129949 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

764129949 is a deficient number, since it is larger than the sum of its proper divisors (361404771).

764129949 is a wasteful number, since it uses less digits than its factorization.

764129949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293200.

The product of its digits is 979776, while the sum is 51.

The square root of 764129949 is about 27642.9005171310. The cubic root of 764129949 is about 914.2305729707.

The spelling of 764129949 in words is "seven hundred sixty-four million, one hundred twenty-nine thousand, nine hundred forty-nine".