397390 has 24 divisors (see below), whose sum is σ = 833112. Its totient is φ = 136080.

The previous prime is 397379. The next prime is 397427. The reversal of 397390 is 93793.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

397390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85 + ... + 895.

It is an arithmetic number, because the mean of its divisors is an integer number (34713).

2³⁹⁷³⁹⁰ is an apocalyptic number.

397390 is an abundant number, since it is smaller than the sum of its proper divisors (435722).

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

397390 is a wasteful number, since it uses less digits than its factorization.

397390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 397390 is about 630.3887689355. The cubic root of 397390 is about 73.5200247782.

It can be divided in two parts, 397 and 390, that added together give a palindrome (787).

The spelling of 397390 in words is "three hundred ninety-seven thousand, three hundred ninety".