399448 has 24 divisors (see below), whose sum is σ = 872100. Its totient is φ = 171024.

The previous prime is 399439. The next prime is 399473. The reversal of 399448 is 844993.

It is a congruent number.

It is an unprimeable number.

399448 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118 + ... + 901.

2³⁹⁹⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

399448 is an abundant number, since it is smaller than the sum of its proper divisors (472652).

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

399448 is a wasteful number, since it uses less digits than its factorization.

399448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1028 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 399448 is about 632.0189870566. The cubic root of 399448 is about 73.6467212802.

The spelling of 399448 in words is "three hundred ninety-nine thousand, four hundred forty-eight".