399032043 has 16 divisors (see below), whose sum is σ = 536549376. Its totient is φ = 263777760.

The previous prime is 399032033. The next prime is 399032047. The reversal of 399032043 is 340230993.

It is not a de Polignac number, because 399032043 - 2⁴ = 399032027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399031995 and 399032013.

It is not an unprimeable number, because it can be changed into a prime (399032047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212796 + ... + 214662.

It is an arithmetic number, because the mean of its divisors is an integer number (33534336).

Almost surely, 2^399032043 is an apocalyptic number.

399032043 is a deficient number, since it is larger than the sum of its proper divisors (137517333).

399032043 is a wasteful number, since it uses less digits than its factorization.

399032043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 399032043 is about 19975.7864175606. The cubic root of 399032043 is about 736.2114889975.

The spelling of 399032043 in words is "three hundred ninety-nine million, thirty-two thousand, forty-three".