399476 has 24 divisors (see below), whose sum is σ = 872256. Its totient is φ = 155520.

The previous prime is 399473. The next prime is 399481. The reversal of 399476 is 674993.

399476 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 399476.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341 + ... + 956.

It is an arithmetic number, because the mean of its divisors is an integer number (36344).

399476 is a Friedman number, since it can be written as 7^6+4^9+3^9, using all its digits and the basic arithmetic operations.

2³⁹⁹⁴⁷⁶ is an apocalyptic number.

It is an amenable number.

399476 is an abundant number, since it is smaller than the sum of its proper divisors (472780).

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

399476 is a wasteful number, since it uses less digits than its factorization.

399476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1317 counting only the distinct ones).

The product of its digits is 40824, while the sum is 38.

The square root of 399476 is about 632.0411379016. The cubic root of 399476 is about 73.6484420382.

The spelling of 399476 in words is "three hundred ninety-nine thousand, four hundred seventy-six".