399450 has 24 divisors (see below), whose sum is σ = 991008. Its totient is φ = 106480.

The previous prime is 399439. The next prime is 399473. The reversal of 399450 is 54993.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

399450 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, 1182 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (41292).

2³⁹⁹⁴⁵⁰ is an apocalyptic number.

399450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399450 is an abundant number, since it is smaller than the sum of its proper divisors (591558).

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

399450 is a wasteful number, since it uses less digits than its factorization.

399450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678 (or 2673 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 399450 is about 632.0205692855. The cubic root of 399450 is about 73.6468441942.

The spelling of 399450 in words is "three hundred ninety-nine thousand, four hundred fifty".