397814159 has 2 divisors, whose sum is σ = 397814160. Its totient is φ = 397814158.

The previous prime is 397814107. The next prime is 397814173. The reversal of 397814159 is 951418793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397814159 - 2⁸ = 397813903 is a prime.

It is a super-2 number, since 2×397814159² = 316512210201754562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397814359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198907079 + 198907080.

It is an arithmetic number, because the mean of its divisors is an integer number (198907080).

Almost surely, 2^397814159 is an apocalyptic number.

397814159 is a deficient number, since it is larger than the sum of its proper divisors (1).

397814159 is an equidigital number, since it uses as much as digits as its factorization.

397814159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 47.

The square root of 397814159 is about 19945.2791156203. The cubic root of 397814159 is about 735.4617297164.

The spelling of 397814159 in words is "three hundred ninety-seven million, eight hundred fourteen thousand, one hundred fifty-nine".