397143027 has 8 divisors (see below), whose sum is σ = 588360080. Its totient is φ = 264762000.

The previous prime is 397143017. The next prime is 397143031. The reversal of 397143027 is 720341793.

It is not a de Polignac number, because 397143027 - 2⁴ = 397143011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397142982 and 397143000.

It is not an unprimeable number, because it can be changed into a prime (397143007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7354474 + ... + 7354527.

It is an arithmetic number, because the mean of its divisors is an integer number (73545010).

Almost surely, 2^397143027 is an apocalyptic number.

397143027 is a deficient number, since it is larger than the sum of its proper divisors (191217053).

397143027 is a wasteful number, since it uses less digits than its factorization.

397143027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14709010 (or 14709004 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 397143027 is about 19928.4476816434. The cubic root of 397143027 is about 735.0479102464.

The spelling of 397143027 in words is "three hundred ninety-seven million, one hundred forty-three thousand, twenty-seven".