397953683 has 2 divisors, whose sum is σ = 397953684. Its totient is φ = 397953682.

The previous prime is 397953671. The next prime is 397953701. The reversal of 397953683 is 386359793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397953683 - 2⁸ = 397953427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (397953623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198976841 + 198976842.

It is an arithmetic number, because the mean of its divisors is an integer number (198976842).

Almost surely, 2^397953683 is an apocalyptic number.

397953683 is a deficient number, since it is larger than the sum of its proper divisors (1).

397953683 is an equidigital number, since it uses as much as digits as its factorization.

397953683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 53.

The square root of 397953683 is about 19948.7764787718. The cubic root of 397953683 is about 735.5477016590.

The spelling of 397953683 in words is "three hundred ninety-seven million, nine hundred fifty-three thousand, six hundred eighty-three".