397203841 has 4 divisors (see below), whose sum is σ = 397450800. Its totient is φ = 396956884.

The previous prime is 397203787. The next prime is 397203847. The reversal of 397203841 is 148302793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397203841 - 2¹³ = 397195649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397203841.

It is not an unprimeable number, because it can be changed into a prime (397203847) 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, 121051 + ... + 124288.

It is an arithmetic number, because the mean of its divisors is an integer number (99362700).

Almost surely, 2^397203841 is an apocalyptic number.

It is an amenable number.

397203841 is a deficient number, since it is larger than the sum of its proper divisors (246959).

397203841 is a wasteful number, since it uses less digits than its factorization.

397203841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246958.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 397203841 is about 19929.9734319943. The cubic root of 397203841 is about 735.0854273113.

The spelling of 397203841 in words is "three hundred ninety-seven million, two hundred three thousand, eight hundred forty-one".