39923079197 has 4 divisors (see below), whose sum is σ = 39970664160. Its totient is φ = 39875494236.

The previous prime is 39923079193. The next prime is 39923079211. The reversal of 39923079197 is 79197032993.

39923079197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39923079197 - 2² = 39923079193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39923079193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23791223 + ... + 23792900.

It is an arithmetic number, because the mean of its divisors is an integer number (9992666040).

Almost surely, 2^39923079197 is an apocalyptic number.

It is an amenable number.

39923079197 is a deficient number, since it is larger than the sum of its proper divisors (47584963).

39923079197 is an equidigital number, since it uses as much as digits as its factorization.

39923079197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47584962.

The product of its (nonzero) digits is 5786802, while the sum is 59.

The spelling of 39923079197 in words is "thirty-nine billion, nine hundred twenty-three million, seventy-nine thousand, one hundred ninety-seven".