397323645 has 8 divisors (see below), whose sum is σ = 635717856. Its totient is φ = 211905936.

The previous prime is 397323631. The next prime is 397323659. The reversal of 397323645 is 546323793.

It is an interprime number because it is at equal distance from previous prime (397323631) and next prime (397323659).

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

It is not a de Polignac number, because 397323645 - 2⁴ = 397323629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397323597 and 397323606.

It is a congruent 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, 13244107 + ... + 13244136.

It is an arithmetic number, because the mean of its divisors is an integer number (79464732).

Almost surely, 2^397323645 is an apocalyptic number.

It is an amenable number.

397323645 is a deficient number, since it is larger than the sum of its proper divisors (238394211).

397323645 is a wasteful number, since it uses less digits than its factorization.

397323645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26488251.

The product of its digits is 408240, while the sum is 42.

The square root of 397323645 is about 19932.9788290662. The cubic root of 397323645 is about 735.1593249870.

The spelling of 397323645 in words is "three hundred ninety-seven million, three hundred twenty-three thousand, six hundred forty-five".