39376400197 has 2 divisors, whose sum is σ = 39376400198. Its totient is φ = 39376400196.

The previous prime is 39376400171. The next prime is 39376400209. The reversal of 39376400197 is 79100467393.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23419405156 + 15956995041 = 153034^2 + 126321^2 .

It is a cyclic number.

It is not a de Polignac number, because 39376400197 - 2³⁵ = 5016661829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39376400197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39376400137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19688200098 + 19688200099.

It is an arithmetic number, because the mean of its divisors is an integer number (19688200099).

Almost surely, 2^39376400197 is an apocalyptic number.

It is an amenable number.

39376400197 is a deficient number, since it is larger than the sum of its proper divisors (1).

39376400197 is an equidigital number, since it uses as much as digits as its factorization.

39376400197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 39376400197 in words is "thirty-nine billion, three hundred seventy-six million, four hundred thousand, one hundred ninety-seven".