397810 has 16 divisors (see below), whose sum is σ = 818496. Its totient is φ = 136368.

The previous prime is 397807. The next prime is 397811. The reversal of 397810 is 18793.

It is a super-2 number, since 2×397810² = 316505592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397811) 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, 2772 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (51156).

2³⁹⁷⁸¹⁰ is an apocalyptic number.

397810 is an abundant number, since it is smaller than the sum of its proper divisors (420686).

It is a weird number, because it is abundant, but not a pseudoperfect number.

397810 is a wasteful number, since it uses less digits than its factorization.

397810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 397810 is about 630.7218087239. The cubic root of 397810 is about 73.5459166714.

It can be divided in two parts, 39 and 7810, that multiplied together give a triangular number (304590 = T₇₈₀).

The spelling of 397810 in words is "three hundred ninety-seven thousand, eight hundred ten".