397935101 has 2 divisors, whose sum is σ = 397935102. Its totient is φ = 397935100.

The previous prime is 397935091. The next prime is 397935137. The reversal of 397935101 is 101539793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380211001 + 17724100 = 19499^2 + 4210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397935101 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 (397935001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198967550 + 198967551.

It is an arithmetic number, because the mean of its divisors is an integer number (198967551).

Almost surely, 2^397935101 is an apocalyptic number.

It is an amenable number.

397935101 is a deficient number, since it is larger than the sum of its proper divisors (1).

397935101 is an equidigital number, since it uses as much as digits as its factorization.

397935101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 397935101 is about 19948.3107304854. The cubic root of 397935101 is about 735.5362529564.

The spelling of 397935101 in words is "three hundred ninety-seven million, nine hundred thirty-five thousand, one hundred one".