397943211 has 8 divisors (see below), whose sum is σ = 530685904. Its totient is φ = 265248000.

The previous prime is 397943207. The next prime is 397943279. The reversal of 397943211 is 112349793.

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

It is not a de Polignac number, because 397943211 - 2² = 397943207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397943211.

It is not an unprimeable number, because it can be changed into a prime (397943111) 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, 19635 + ... + 34371.

It is an arithmetic number, because the mean of its divisors is an integer number (66335738).

Almost surely, 2^397943211 is an apocalyptic number.

397943211 is a deficient number, since it is larger than the sum of its proper divisors (132742693).

397943211 is a wasteful number, since it uses less digits than its factorization.

397943211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23741.

The product of its digits is 40824, while the sum is 39.

The square root of 397943211 is about 19948.5140048075. The cubic root of 397943211 is about 735.5412497163.

The spelling of 397943211 in words is "three hundred ninety-seven million, nine hundred forty-three thousand, two hundred eleven".