397031417 has 2 divisors, whose sum is σ = 397031418. Its totient is φ = 397031416.

The previous prime is 397031407. The next prime is 397031461. The reversal of 397031417 is 714130793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350026681 + 47004736 = 18709^2 + 6856^2 .

It is a cyclic number.

It is not a de Polignac number, because 397031417 - 2¹² = 397027321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (397031407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198515708 + 198515709.

It is an arithmetic number, because the mean of its divisors is an integer number (198515709).

Almost surely, 2^397031417 is an apocalyptic number.

It is an amenable number.

397031417 is a deficient number, since it is larger than the sum of its proper divisors (1).

397031417 is an equidigital number, since it uses as much as digits as its factorization.

397031417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 397031417 is about 19925.6472165900. The cubic root of 397031417 is about 734.9790464047.

The spelling of 397031417 in words is "three hundred ninety-seven million, thirty-one thousand, four hundred seventeen".