76399771 has 12 divisors (see below), whose sum is σ = 89580288. Its totient is φ = 64964592.

The previous prime is 76399759. The next prime is 76399787. The reversal of 76399771 is 17799367.

It is not a de Polignac number, because 76399771 - 2⁷ = 76399643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (76399571) 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 11 ways as a sum of consecutive naturals, for example, 85 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (7465024).

Almost surely, 2^76399771 is an apocalyptic number.

76399771 is a deficient number, since it is larger than the sum of its proper divisors (13180517).

76399771 is a wasteful number, since it uses less digits than its factorization.

76399771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12418 (or 12411 counting only the distinct ones).

The product of its digits is 500094, while the sum is 49.

The square root of 76399771 is about 8740.6962537317. The cubic root of 76399771 is about 424.3237614830.

The spelling of 76399771 in words is "seventy-six million, three hundred ninety-nine thousand, seven hundred seventy-one".