38938776397 has 2 divisors, whose sum is σ = 38938776398. Its totient is φ = 38938776396.

The previous prime is 38938776367. The next prime is 38938776413. The reversal of 38938776397 is 79367783983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33121816036 + 5816960361 = 181994^2 + 76269^2 .

It is an emirp because it is prime and its reverse (79367783983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38938776397 - 2⁷ = 38938776269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38938776307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19469388198 + 19469388199.

It is an arithmetic number, because the mean of its divisors is an integer number (19469388199).

Almost surely, 2^38938776397 is an apocalyptic number.

It is an amenable number.

38938776397 is a deficient number, since it is larger than the sum of its proper divisors (1).

38938776397 is an equidigital number, since it uses as much as digits as its factorization.

38938776397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288054144, while the sum is 70.

The spelling of 38938776397 in words is "thirty-eight billion, nine hundred thirty-eight million, seven hundred seventy-six thousand, three hundred ninety-seven".