397099403 has 2 divisors, whose sum is σ = 397099404. Its totient is φ = 397099402.

The previous prime is 397099387. The next prime is 397099421. The reversal of 397099403 is 304990793.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397099403 - 2⁴ = 397099387 is a prime.

It is not a weakly prime, because it can be changed into another prime (397099463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198549701 + 198549702.

It is an arithmetic number, because the mean of its divisors is an integer number (198549702).

Almost surely, 2^397099403 is an apocalyptic number.

397099403 is a deficient number, since it is larger than the sum of its proper divisors (1).

397099403 is an equidigital number, since it uses as much as digits as its factorization.

397099403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 397099403 is about 19927.3531358281. The cubic root of 397099403 is about 735.0209955901.

The spelling of 397099403 in words is "three hundred ninety-seven million, ninety-nine thousand, four hundred three".