76739491 has 4 divisors (see below), whose sum is σ = 76821984. Its totient is φ = 76657000.

The previous prime is 76739483. The next prime is 76739519. The reversal of 76739491 is 19493767.

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 76739491 - 2³ = 76739483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76739791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39835 + ... + 41716.

It is an arithmetic number, because the mean of its divisors is an integer number (19205496).

Almost surely, 2^76739491 is an apocalyptic number.

76739491 is a deficient number, since it is larger than the sum of its proper divisors (82493).

76739491 is an equidigital number, since it uses as much as digits as its factorization.

76739491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82492.

The product of its digits is 285768, while the sum is 46.

The square root of 76739491 is about 8760.1079331250. The cubic root of 76739491 is about 424.9517656909.

The spelling of 76739491 in words is "seventy-six million, seven hundred thirty-nine thousand, four hundred ninety-one".