76691339 has 2 divisors, whose sum is σ = 76691340. Its totient is φ = 76691338.

The previous prime is 76691333. The next prime is 76691347. The reversal of 76691339 is 93319667.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76691339 - 2⁴ = 76691323 is a prime.

It is a super-2 number, since 2×76691339² = 11763122955225842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76691339.

It is not a weakly prime, because it can be changed into another prime (76691333) 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 as a sum of consecutive naturals, namely, 38345669 + 38345670.

It is an arithmetic number, because the mean of its divisors is an integer number (38345670).

Almost surely, 2^76691339 is an apocalyptic number.

76691339 is a deficient number, since it is larger than the sum of its proper divisors (1).

76691339 is an equidigital number, since it uses as much as digits as its factorization.

76691339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 44.

The square root of 76691339 is about 8757.3591338942. The cubic root of 76691339 is about 424.8628650980.

The spelling of 76691339 in words is "seventy-six million, six hundred ninety-one thousand, three hundred thirty-nine".