397727 has 12 divisors (see below), whose sum is σ = 462840. Its totient is φ = 340560.

The previous prime is 397723. The next prime is 397729. The reversal of 397727 is 727793.

It is not a de Polignac number, because 397727 - 2² = 397723 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 2213 + ... + 2385.

It is an arithmetic number, because the mean of its divisors is an integer number (38570).

2³⁹⁷⁷²⁷ is an apocalyptic number.

397727 is a deficient number, since it is larger than the sum of its proper divisors (65113).

397727 is a wasteful number, since it uses less digits than its factorization.

397727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 203 counting only the distinct ones).

The product of its digits is 18522, while the sum is 35.

The square root of 397727 is about 630.6560076619. The cubic root of 397727 is about 73.5408013855.

It can be divided in two parts, 3977 and 27, that added together give a palindrome (4004).

The spelling of 397727 in words is "three hundred ninety-seven thousand, seven hundred twenty-seven".