397685338 has 8 divisors (see below), whose sum is σ = 597823380. Its totient is φ = 198410880.

The previous prime is 397685273. The next prime is 397685339. The reversal of 397685338 is 833586793.

It can be written as a sum of positive squares in 2 ways, for example, as 377408329 + 20277009 = 19427^2 + 4503^2 .

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 (397685339) 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, 214743 + ... + 216586.

Almost surely, 2^397685338 is an apocalyptic number.

397685338 is a deficient number, since it is larger than the sum of its proper divisors (200138042).

397685338 is a wasteful number, since it uses less digits than its factorization.

397685338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431792.

The product of its digits is 3265920, while the sum is 52.

The square root of 397685338 is about 19942.0494934698. The cubic root of 397685338 is about 735.3823349020.

The spelling of 397685338 in words is "three hundred ninety-seven million, six hundred eighty-five thousand, three hundred thirty-eight".