399472 has 10 divisors (see below), whose sum is σ = 774008. Its totient is φ = 199728.

The previous prime is 399439. The next prime is 399473. The reversal of 399472 is 274993.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399473) by changing a digit.

399472 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 as a sum of consecutive naturals, namely, 12468 + ... + 12499.

2³⁹⁹⁴⁷² is an apocalyptic number.

It is an amenable number.

399472 is a deficient number, since it is larger than the sum of its proper divisors (374536).

399472 is a wasteful number, since it uses less digits than its factorization.

399472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24975 (or 24969 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 399472 is about 632.0379735427. The cubic root of 399472 is about 73.6481962206.

The spelling of 399472 in words is "three hundred ninety-nine thousand, four hundred seventy-two".