397140 has 24 divisors (see below), whose sum is σ = 1112160. Its totient is φ = 105888.

The previous prime is 397127. The next prime is 397151. The reversal of 397140 is 41793.

397140 = T₂₀₁ + T₂₀₂ + ... + T₂₁₈.

It is a self number, because there is not a number n which added to its sum of digits gives 397140.

It is a congruent number.

It is an unprimeable number.

397140 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250 + ... + 3369.

It is an arithmetic number, because the mean of its divisors is an integer number (46340).

2³⁹⁷¹⁴⁰ is an apocalyptic number.

397140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397140 is an abundant number, since it is smaller than the sum of its proper divisors (715020).

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

397140 is a wasteful number, since it uses less digits than its factorization.

397140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631 (or 6629 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 397140 is about 630.1904474046. The cubic root of 397140 is about 73.5046042745.

The spelling of 397140 in words is "three hundred ninety-seven thousand, one hundred forty".