397325378 has 16 divisors (see below), whose sum is σ = 628992000. Its totient is φ = 187715952.

The previous prime is 397325353. The next prime is 397325381. The reversal of 397325378 is 873523793.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343 + ... + 28221.

It is an arithmetic number, because the mean of its divisors is an integer number (39312000).

Almost surely, 2^397325378 is an apocalyptic number.

397325378 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

397325378 is a deficient number, since it is larger than the sum of its proper divisors (231666622).

397325378 is a wasteful number, since it uses less digits than its factorization.

397325378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27289.

The product of its digits is 952560, while the sum is 47.

The square root of 397325378 is about 19933.0222996915. The cubic root of 397325378 is about 735.1603938295.

The spelling of 397325378 in words is "three hundred ninety-seven million, three hundred twenty-five thousand, three hundred seventy-eight".