397844943 has 8 divisors (see below), whose sum is σ = 530572848. Its totient is φ = 265173504.

The previous prime is 397844927. The next prime is 397844947. The reversal of 397844943 is 349448793.

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

It is not a de Polignac number, because 397844943 - 2⁴ = 397844927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397844947) 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, 6721 + ... + 28997.

It is an arithmetic number, because the mean of its divisors is an integer number (66321606).

Almost surely, 2^397844943 is an apocalyptic number.

397844943 is a deficient number, since it is larger than the sum of its proper divisors (132727905).

397844943 is a wasteful number, since it uses less digits than its factorization.

397844943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28233.

The product of its digits is 2612736, while the sum is 51.

The square root of 397844943 is about 19946.0508121282. The cubic root of 397844943 is about 735.4806999394.

The spelling of 397844943 in words is "three hundred ninety-seven million, eight hundred forty-four thousand, nine hundred forty-three".