397189226 has 8 divisors (see below), whose sum is σ = 680895840. Its totient is φ = 170223948.

The previous prime is 397189223. The next prime is 397189229. The reversal of 397189226 is 622981793.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (397189223) and next prime (397189229).

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

It is not an unprimeable number, because it can be changed into a prime (397189223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14185316 + ... + 14185343.

It is an arithmetic number, because the mean of its divisors is an integer number (85111980).

Almost surely, 2^397189226 is an apocalyptic number.

397189226 is a deficient number, since it is larger than the sum of its proper divisors (283706614).

397189226 is a wasteful number, since it uses less digits than its factorization.

397189226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28370668.

The product of its digits is 326592, while the sum is 47.

The square root of 397189226 is about 19929.6067698287. The cubic root of 397189226 is about 735.0764114491.

The spelling of 397189226 in words is "three hundred ninety-seven million, one hundred eighty-nine thousand, two hundred twenty-six".