399083085 has 16 divisors (see below), whose sum is σ = 709481280. Its totient is φ = 212844240.

The previous prime is 399083081. The next prime is 399083089. The reversal of 399083085 is 580380993.

It is an interprime number because it is at equal distance from previous prime (399083081) and next prime (399083089).

It is not a de Polignac number, because 399083085 - 2² = 399083081 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 399083085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399083081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1477951 + ... + 1478220.

It is an arithmetic number, because the mean of its divisors is an integer number (44342580).

Almost surely, 2^399083085 is an apocalyptic number.

It is an amenable number.

399083085 is a deficient number, since it is larger than the sum of its proper divisors (310398195).

399083085 is a wasteful number, since it uses less digits than its factorization.

399083085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956185 (or 2956179 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 399083085 is about 19977.0639734672. The cubic root of 399083085 is about 736.2428783770.

The spelling of 399083085 in words is "three hundred ninety-nine million, eighty-three thousand, eighty-five".