397856167 has 8 divisors (see below), whose sum is σ = 407636240. Its totient is φ = 388100160.

The previous prime is 397856119. The next prime is 397856177. The reversal of 397856167 is 761658793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397856167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397856177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30067 + ... + 41227.

It is an arithmetic number, because the mean of its divisors is an integer number (50954530).

Almost surely, 2^397856167 is an apocalyptic number.

397856167 is a deficient number, since it is larger than the sum of its proper divisors (9780073).

397856167 is a wasteful number, since it uses less digits than its factorization.

397856167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12033.

The product of its digits is 1905120, while the sum is 52.

The square root of 397856167 is about 19946.3321690982. The cubic root of 397856167 is about 735.4876163339.

The spelling of 397856167 in words is "three hundred ninety-seven million, eight hundred fifty-six thousand, one hundred sixty-seven".