76449957 has 4 divisors (see below), whose sum is σ = 101933280. Its totient is φ = 50966636.

The previous prime is 76449949. The next prime is 76449979. The reversal of 76449957 is 75994467.

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 76449957 - 2³ = 76449949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76449917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12741657 + ... + 12741662.

It is an arithmetic number, because the mean of its divisors is an integer number (25483320).

Almost surely, 2^76449957 is an apocalyptic number.

It is an amenable number.

76449957 is a deficient number, since it is larger than the sum of its proper divisors (25483323).

76449957 is a wasteful number, since it uses less digits than its factorization.

76449957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25483322.

The product of its digits is 1905120, while the sum is 51.

The square root of 76449957 is about 8743.5666063684. The cubic root of 76449957 is about 424.4166520371.

It can be divided in two parts, 764 and 49957, that added together give a triangular number (50721 = T₃₁₈).

The spelling of 76449957 in words is "seventy-six million, four hundred forty-nine thousand, nine hundred fifty-seven".