397771 has 4 divisors (see below), whose sum is σ = 433944. Its totient is φ = 361600.

The previous prime is 397763. The next prime is 397799. The reversal of 397771 is 177793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 397771 - 2³ = 397763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397721) 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, 18070 + ... + 18091.

It is an arithmetic number, because the mean of its divisors is an integer number (108486).

2³⁹⁷⁷⁷¹ is an apocalyptic number.

397771 is a deficient number, since it is larger than the sum of its proper divisors (36173).

397771 is a wasteful number, since it uses less digits than its factorization.

397771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36172.

The product of its digits is 9261, while the sum is 34.

The square root of 397771 is about 630.6908910076. The cubic root of 397771 is about 73.5435131919.

The spelling of 397771 in words is "three hundred ninety-seven thousand, seven hundred seventy-one".