39197297473 has 2 divisors, whose sum is σ = 39197297474. Its totient is φ = 39197297472.

The previous prime is 39197297389. The next prime is 39197297501. The reversal of 39197297473 is 37479279193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30985856784 + 8211440689 = 176028^2 + 90617^2 .

It is a cyclic number.

It is not a de Polignac number, because 39197297473 - 2²¹ = 39195200321 is a prime.

It is not a weakly prime, because it can be changed into another prime (39197277473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19598648736 + 19598648737.

It is an arithmetic number, because the mean of its divisors is an integer number (19598648737).

Almost surely, 2^39197297473 is an apocalyptic number.

It is an amenable number.

39197297473 is a deficient number, since it is larger than the sum of its proper divisors (1).

39197297473 is an equidigital number, since it uses as much as digits as its factorization.

39197297473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18003384, while the sum is 61.

The spelling of 39197297473 in words is "thirty-nine billion, one hundred ninety-seven million, two hundred ninety-seven thousand, four hundred seventy-three".