399463 has 4 divisors (see below), whose sum is σ = 409248. Its totient is φ = 389680.

The previous prime is 399439. The next prime is 399473. The reversal of 399463 is 364993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399463 is a prime.

It is a Duffinian number.

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 (399403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4831 + ... + 4912.

It is an arithmetic number, because the mean of its divisors is an integer number (102312).

2³⁹⁹⁴⁶³ is an apocalyptic number.

399463 is a deficient number, since it is larger than the sum of its proper divisors (9785).

399463 is an equidigital number, since it uses as much as digits as its factorization.

399463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9784.

The product of its digits is 17496, while the sum is 34.

The square root of 399463 is about 632.0308536773. The cubic root of 399463 is about 73.6476431249.

The spelling of 399463 in words is "three hundred ninety-nine thousand, four hundred sixty-three".