39679497679 has 2 divisors, whose sum is σ = 39679497680. Its totient is φ = 39679497678.

The previous prime is 39679497617. The next prime is 39679497749. The reversal of 39679497679 is 97679497693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39679497679 - 2⁷ = 39679497551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39679407679) 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, 19839748839 + 19839748840.

It is an arithmetic number, because the mean of its divisors is an integer number (19839748840).

Almost surely, 2^39679497679 is an apocalyptic number.

39679497679 is a deficient number, since it is larger than the sum of its proper divisors (1).

39679497679 is an equidigital number, since it uses as much as digits as its factorization.

39679497679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972182736, while the sum is 76.

The spelling of 39679497679 in words is "thirty-nine billion, six hundred seventy-nine million, four hundred ninety-seven thousand, six hundred seventy-nine".