397143194 has 16 divisors (see below), whose sum is σ = 682344000. Its totient is φ = 169822464.

The previous prime is 397143181. The next prime is 397143199. The reversal of 397143194 is 491341793.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (397143199) 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, 25304 + ... + 37875.

It is an arithmetic number, because the mean of its divisors is an integer number (42646500).

Almost surely, 2^397143194 is an apocalyptic number.

397143194 is a deficient number, since it is larger than the sum of its proper divisors (285200806).

397143194 is a wasteful number, since it uses less digits than its factorization.

397143194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63637.

The product of its digits is 81648, while the sum is 41.

The square root of 397143194 is about 19928.4518716332. The cubic root of 397143194 is about 735.0480132764.

The spelling of 397143194 in words is "three hundred ninety-seven million, one hundred forty-three thousand, one hundred ninety-four".