399850 has 24 divisors (see below), whose sum is σ = 812448. Its totient is φ = 145200.

The previous prime is 399793. The next prime is 399851. The reversal of 399850 is 58993.

It is not an unprimeable number, because it can be changed into a prime (399851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187 + ... + 913.

It is an arithmetic number, because the mean of its divisors is an integer number (33852).

2³⁹⁹⁸⁵⁰ is an apocalyptic number.

399850 is an abundant number, since it is smaller than the sum of its proper divisors (412598).

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

399850 is a wasteful number, since it uses less digits than its factorization.

399850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 399850 is about 632.3369355020. The cubic root of 399850 is about 73.6714187426.

It can be divided in two parts, 39 and 9850, that added together give a palindrome (9889).

The spelling of 399850 in words is "three hundred ninety-nine thousand, eight hundred fifty".