39679497694 has 8 divisors (see below), whose sum is σ = 59535304920. Its totient is φ = 19834396056.

The previous prime is 39679497679. The next prime is 39679497749. The reversal of 39679497694 is 49679497693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2667124 + ... + 2681959.

It is an arithmetic number, because the mean of its divisors is an integer number (7441913115).

Almost surely, 2^39679497694 is an apocalyptic number.

39679497694 is a deficient number, since it is larger than the sum of its proper divisors (19855807226).

39679497694 is a wasteful number, since it uses less digits than its factorization.

39679497694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352794.

The product of its digits is 555532992, while the sum is 73.

Subtracting 39679497694 from its reverse (49679497693), we obtain a palindrome (9999999999).

The spelling of 39679497694 in words is "thirty-nine billion, six hundred seventy-nine million, four hundred ninety-seven thousand, six hundred ninety-four".