76440347 has 4 divisors (see below), whose sum is σ = 80936856. Its totient is φ = 71943840.

The previous prime is 76440323. The next prime is 76440349. The reversal of 76440347 is 74304467.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76440347 - 2¹⁰ = 76439323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76440349) 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 3 ways as a sum of consecutive naturals, for example, 2248229 + ... + 2248262.

It is an arithmetic number, because the mean of its divisors is an integer number (20234214).

Almost surely, 2^76440347 is an apocalyptic number.

76440347 is a deficient number, since it is larger than the sum of its proper divisors (4496509).

76440347 is a wasteful number, since it uses less digits than its factorization.

76440347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496508.

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 76440347 is about 8743.0170421886. The cubic root of 76440347 is about 424.3988677893.

The spelling of 76440347 in words is "seventy-six million, four hundred forty thousand, three hundred forty-seven".