399734 has 8 divisors (see below), whose sum is σ = 602640. Its totient is φ = 198856.

The previous prime is 399731. The next prime is 399739. The reversal of 399734 is 437993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 399694 and 399703.

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 399734.

It is not an unprimeable number, because it can be changed into a prime (399731) 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, 167 + ... + 909.

It is an arithmetic number, because the mean of its divisors is an integer number (75330).

2³⁹⁹⁷³⁴ is an apocalyptic number.

399734 is a deficient number, since it is larger than the sum of its proper divisors (202906).

399734 is a wasteful number, since it uses less digits than its factorization.

399734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014.

The product of its digits is 20412, while the sum is 35.

The square root of 399734 is about 632.2452055967. The cubic root of 399734 is about 73.6642938114.

The spelling of 399734 in words is "three hundred ninety-nine thousand, seven hundred thirty-four".