397601983 has 2 divisors, whose sum is σ = 397601984. Its totient is φ = 397601982.

The previous prime is 397601959. The next prime is 397602017. The reversal of 397601983 is 389106793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397601983 - 2²¹ = 395504831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397601683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198800991 + 198800992.

It is an arithmetic number, because the mean of its divisors is an integer number (198800992).

Almost surely, 2^397601983 is an apocalyptic number.

397601983 is a deficient number, since it is larger than the sum of its proper divisors (1).

397601983 is an equidigital number, since it uses as much as digits as its factorization.

397601983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 397601983 is about 19939.9594533189. The cubic root of 397601983 is about 735.3309525050.

The spelling of 397601983 in words is "three hundred ninety-seven million, six hundred one thousand, nine hundred eighty-three".