397711 has 4 divisors (see below), whose sum is σ = 400752. Its totient is φ = 394672.

The previous prime is 397697. The next prime is 397721. The reversal of 397711 is 117793.

It is a happy number.

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 397711 - 2¹⁵ = 364943 is a prime.

It is an Ulam number.

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 397711.

It is a congruent 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, 1315 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (100188).

2³⁹⁷⁷¹¹ is an apocalyptic number.

397711 is a deficient number, since it is larger than the sum of its proper divisors (3041).

397711 is a wasteful number, since it uses less digits than its factorization.

397711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040.

The product of its digits is 1323, while the sum is 28.

The square root of 397711 is about 630.6433223305. The cubic root of 397711 is about 73.5398152244.

It can be divided in two parts, 39 and 7711, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 397711 in words is "three hundred ninety-seven thousand, seven hundred eleven".