399260 has 12 divisors (see below), whose sum is σ = 838488. Its totient is φ = 159696.

The previous prime is 399241. The next prime is 399263. The reversal of 399260 is 62993.

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 399260.

It is not an unprimeable number, because it can be changed into a prime (399263) by changing a digit.

399260 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9962 + ... + 10001.

It is an arithmetic number, because the mean of its divisors is an integer number (69874).

2³⁹⁹²⁶⁰ is an apocalyptic number.

It is an amenable number.

399260 is an abundant number, since it is smaller than the sum of its proper divisors (439228).

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

399260 is a wasteful number, since it uses less digits than its factorization.

399260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19972 (or 19970 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 399260 is about 631.8702398436. The cubic root of 399260 is about 73.6351655364.

It can be divided in two parts, 399 and 260, that multiplied together give a triangular number (103740 = T₄₅₅).

The spelling of 399260 in words is "three hundred ninety-nine thousand, two hundred sixty".