397854 has 36 divisors (see below), whose sum is σ = 929448. Its totient is φ = 122760.

The previous prime is 397849. The next prime is 397867. The reversal of 397854 is 458793.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12819 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (25818).

2³⁹⁷⁸⁵⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464724).

397854 is an abundant number, since it is smaller than the sum of its proper divisors (531594).

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

397854 is a wasteful number, since it uses less digits than its factorization.

397854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 59 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 397854 is about 630.7566884306. The cubic root of 397854 is about 73.5486281007.

The spelling of 397854 in words is "three hundred ninety-seven thousand, eight hundred fifty-four".