397973071 has 8 divisors (see below), whose sum is σ = 428673024. Its totient is φ = 368389560.

The previous prime is 397973057. The next prime is 397973123. The reversal of 397973071 is 170379793.

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

It is a cyclic number.

It is not a de Polignac number, because 397973071 - 2⁷ = 397972943 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 (397973011) 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 in 7 ways as a sum of consecutive naturals, for example, 278371 + ... + 279796.

It is an arithmetic number, because the mean of its divisors is an integer number (53584128).

Almost surely, 2^397973071 is an apocalyptic number.

397973071 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

397973071 is a deficient number, since it is larger than the sum of its proper divisors (30699953).

397973071 is a wasteful number, since it uses less digits than its factorization.

397973071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558221.

The product of its (nonzero) digits is 250047, while the sum is 46.

The square root of 397973071 is about 19949.2624174429. The cubic root of 397973071 is about 735.5596465727.

The spelling of 397973071 in words is "three hundred ninety-seven million, nine hundred seventy-three thousand, seventy-one".