39976642877 has 2 divisors, whose sum is σ = 39976642878. Its totient is φ = 39976642876.

The previous prime is 39976642847. The next prime is 39976642879. The reversal of 39976642877 is 77824667993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39690999076 + 285643801 = 199226^2 + 16901^2 .

It is a cyclic number.

It is not a de Polignac number, because 39976642877 - 2²² = 39972448573 is a prime.

Together with 39976642879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39976642879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19988321438 + 19988321439.

It is an arithmetic number, because the mean of its divisors is an integer number (19988321439).

Almost surely, 2^39976642877 is an apocalyptic number.

It is an amenable number.

39976642877 is a deficient number, since it is larger than the sum of its proper divisors (1).

39976642877 is an equidigital number, since it uses as much as digits as its factorization.

39976642877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192036096, while the sum is 68.

The spelling of 39976642877 in words is "thirty-nine billion, nine hundred seventy-six million, six hundred forty-two thousand, eight hundred seventy-seven".