76439677 has 2 divisors, whose sum is σ = 76439678. Its totient is φ = 76439676.

The previous prime is 76439653. The next prime is 76439683. The reversal of 76439677 is 77693467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76405081 + 34596 = 8741^2 + 186^2 .

It is an emirp because it is prime and its reverse (77693467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76439677 - 2⁷ = 76439549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76439677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76439647) 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, 38219838 + 38219839.

It is an arithmetic number, because the mean of its divisors is an integer number (38219839).

Almost surely, 2^76439677 is an apocalyptic number.

It is an amenable number.

76439677 is a deficient number, since it is larger than the sum of its proper divisors (1).

76439677 is an equidigital number, since it uses as much as digits as its factorization.

76439677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 49.

The square root of 76439677 is about 8742.9787258119. The cubic root of 76439677 is about 424.3976278330.

The spelling of 76439677 in words is "seventy-six million, four hundred thirty-nine thousand, six hundred seventy-seven".