39936740397 has 8 divisors (see below), whose sum is σ = 53265044160. Its totient is φ = 26616465120.

The previous prime is 39936740377. The next prime is 39936740413. The reversal of 39936740397 is 79304763993.

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

It is a de Polignac number, because none of the positive numbers 2^k-39936740397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39936740397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39936740377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1995504 + ... + 2015417.

It is an arithmetic number, because the mean of its divisors is an integer number (6658130520).

Almost surely, 2^39936740397 is an apocalyptic number.

It is an amenable number.

39936740397 is a deficient number, since it is larger than the sum of its proper divisors (13328303763).

39936740397 is a wasteful number, since it uses less digits than its factorization.

39936740397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014243.

The product of its (nonzero) digits is 23147208, while the sum is 60.

The spelling of 39936740397 in words is "thirty-nine billion, nine hundred thirty-six million, seven hundred forty thousand, three hundred ninety-seven".