397897041 has 4 divisors (see below), whose sum is σ = 530529392. Its totient is φ = 265264692.

The previous prime is 397897037. The next prime is 397897043. The reversal of 397897041 is 140798793.

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 not a de Polignac number, because 397897041 - 2² = 397897037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397897043) 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, 66316171 + ... + 66316176.

It is an arithmetic number, because the mean of its divisors is an integer number (132632348).

Almost surely, 2^397897041 is an apocalyptic number.

It is an amenable number.

397897041 is a deficient number, since it is larger than the sum of its proper divisors (132632351).

397897041 is a wasteful number, since it uses less digits than its factorization.

397897041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132632350.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 397897041 is about 19947.3567421852. The cubic root of 397897041 is about 735.5128023968.

The spelling of 397897041 in words is "three hundred ninety-seven million, eight hundred ninety-seven thousand, forty-one".