38317997 has 2 divisors, whose sum is σ = 38317998. Its totient is φ = 38317996.

The previous prime is 38317973. The next prime is 38318011. The reversal of 38317997 is 79971383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35117476 + 3200521 = 5926^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 38317997 - 2⁶ = 38317933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38317397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19158998 + 19158999.

It is an arithmetic number, because the mean of its divisors is an integer number (19158999).

Almost surely, 2^38317997 is an apocalyptic number.

It is an amenable number.

38317997 is a deficient number, since it is larger than the sum of its proper divisors (1).

38317997 is an equidigital number, since it uses as much as digits as its factorization.

38317997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 38317997 is about 6190.1532291212. The cubic root of 38317997 is about 337.1327421607.

The spelling of 38317997 in words is "thirty-eight million, three hundred seventeen thousand, nine hundred ninety-seven".