39976642797 has 96 divisors (see below), whose sum is σ = 67991132160. Its totient is φ = 20765384640.

The previous prime is 39976642697. The next prime is 39976642799. The reversal of 39976642797 is 79724667993.

It is not a de Polignac number, because 39976642797 - 2⁷ = 39976642669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39976642799) 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 in 95 ways as a sum of consecutive naturals, for example, 46538154 + ... + 46539012.

It is an arithmetic number, because the mean of its divisors is an integer number (708240960).

Almost surely, 2^39976642797 is an apocalyptic number.

It is an amenable number.

39976642797 is a deficient number, since it is larger than the sum of its proper divisors (28014489363).

39976642797 is an frugal number, since it uses more digits than its factorization.

39976642797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 953 counting only the distinct ones).

The product of its digits is 216040608, while the sum is 69.

The spelling of 39976642797 in words is "thirty-nine billion, nine hundred seventy-six million, six hundred forty-two thousand, seven hundred ninety-seven".