399700 has 36 divisors (see below), whose sum is σ = 992992. Its totient is φ = 136800.

The previous prime is 399691. The next prime is 399719. The reversal of 399700 is 7993.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415 + ... + 985.

2³⁹⁹⁷⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496496).

399700 is an abundant number, since it is smaller than the sum of its proper divisors (593292).

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

399700 is a wasteful number, since it uses less digits than its factorization.

399700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 399700 is about 632.2183167229. The cubic root of 399700 is about 73.6622052084.

The spelling of 399700 in words is "three hundred ninety-nine thousand, seven hundred".