397926 has 16 divisors (see below), whose sum is σ = 884400. Its totient is φ = 132624.

The previous prime is 397921. The next prime is 397939. The reversal of 397926 is 629793.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 3⁵ + 9 + 9² + 7⁶ + 2³ + 6⁷ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397926.

It is not an unprimeable number, because it can be changed into a prime (397921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631 + ... + 3738.

It is an arithmetic number, because the mean of its divisors is an integer number (55275).

2³⁹⁷⁹²⁶ is an apocalyptic number.

397926 is an abundant number, since it is smaller than the sum of its proper divisors (486474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397926 is a wasteful number, since it uses less digits than its factorization.

397926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380 (or 7374 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 397926 is about 630.8137601543. The cubic root of 397926 is about 73.5530645537.

It can be divided in two parts, 3979 and 26, that added together give a triangular number (4005 = T₈₉).

The spelling of 397926 in words is "three hundred ninety-seven thousand, nine hundred twenty-six".