397699339 has 2 divisors, whose sum is σ = 397699340. Its totient is φ = 397699338.

The previous prime is 397699307. The next prime is 397699349. The reversal of 397699339 is 933996793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397699339 - 2⁵ = 397699307 is a prime.

It is not a weakly prime, because it can be changed into another prime (397699349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198849669 + 198849670.

It is an arithmetic number, because the mean of its divisors is an integer number (198849670).

Almost surely, 2^397699339 is an apocalyptic number.

397699339 is a deficient number, since it is larger than the sum of its proper divisors (1).

397699339 is an equidigital number, since it uses as much as digits as its factorization.

397699339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7440174, while the sum is 58.

The square root of 397699339 is about 19942.4005325337. The cubic root of 397699339 is about 735.3909648130.

The spelling of 397699339 in words is "three hundred ninety-seven million, six hundred ninety-nine thousand, three hundred thirty-nine".