399093 has 8 divisors (see below), whose sum is σ = 536256. Its totient is φ = 264000.

The previous prime is 399079. The next prime is 399097. The reversal of 399093 is 390993.

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

It is not a de Polignac number, because 399093 - 2⁹ = 398581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (67032).

2³⁹⁹⁰⁹³ is an apocalyptic number.

It is an amenable number.

399093 is a deficient number, since it is larger than the sum of its proper divisors (137163).

399093 is a wasteful number, since it uses less digits than its factorization.

399093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035.

The product of its (nonzero) digits is 6561, while the sum is 33.

The square root of 399093 is about 631.7380786370. The cubic root of 399093 is about 73.6248975510.

Subtracting from 399093 its reverse (390993), we obtain a square (8100 = 90²).

The spelling of 399093 in words is "three hundred ninety-nine thousand, ninety-three".