397813601 has 8 divisors (see below), whose sum is σ = 406171584. Its totient is φ = 389487280.

The previous prime is 397813579. The next prime is 397813643. The reversal of 397813601 is 106318793.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397813601 is a prime.

It is a super-2 number, since 2×397813601² = 316511322281174402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397813301) 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, 18380 + ... + 33666.

It is an arithmetic number, because the mean of its divisors is an integer number (50771448).

Almost surely, 2^397813601 is an apocalyptic number.

It is an amenable number.

397813601 is a deficient number, since it is larger than the sum of its proper divisors (8357983).

397813601 is a wasteful number, since it uses less digits than its factorization.

397813601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15831.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 397813601 is about 19945.2651273429. The cubic root of 397813601 is about 735.4613858474.

The spelling of 397813601 in words is "three hundred ninety-seven million, eight hundred thirteen thousand, six hundred one".