399950 has 24 divisors (see below), whose sum is σ = 784920. Its totient is φ = 151200.

The previous prime is 399941. The next prime is 399953. The reversal of 399950 is 59993.

It is a self number, because there is not a number n which added to its sum of digits gives 399950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399953) by changing a digit.

399950 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 11 ways as a sum of consecutive naturals, for example, 740 + ... + 1160.

It is an arithmetic number, because the mean of its divisors is an integer number (32705).

2³⁹⁹⁹⁵⁰ is an apocalyptic number.

399950 is a deficient number, since it is larger than the sum of its proper divisors (384970).

399950 is a wasteful number, since it uses less digits than its factorization.

399950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 35.

The square root of 399950 is about 632.4160023276. The cubic root of 399950 is about 73.6775598186.

The spelling of 399950 in words is "three hundred ninety-nine thousand, nine hundred fifty".