39397406197 has 2 divisors, whose sum is σ = 39397406198. Its totient is φ = 39397406196.

The previous prime is 39397406189. The next prime is 39397406249. The reversal of 39397406197 is 79160479393.

39397406197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36492842961 + 2904563236 = 191031^2 + 53894^2 .

It is a cyclic number.

It is not a de Polignac number, because 39397406197 - 2³ = 39397406189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39397406117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19698703098 + 19698703099.

It is an arithmetic number, because the mean of its divisors is an integer number (19698703099).

Almost surely, 2^39397406197 is an apocalyptic number.

It is an amenable number.

39397406197 is a deficient number, since it is larger than the sum of its proper divisors (1).

39397406197 is an equidigital number, since it uses as much as digits as its factorization.

39397406197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7715736, while the sum is 58.

The spelling of 39397406197 in words is "thirty-nine billion, three hundred ninety-seven million, four hundred six thousand, one hundred ninety-seven".