399041003 has 2 divisors, whose sum is σ = 399041004. Its totient is φ = 399041002.

The previous prime is 399040997. The next prime is 399041029. The reversal of 399041003 is 300140993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399041003 - 2²⁸ = 130605547 is a prime.

It is not a weakly prime, because it can be changed into another prime (399049003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199520501 + 199520502.

It is an arithmetic number, because the mean of its divisors is an integer number (199520502).

Almost surely, 2^399041003 is an apocalyptic number.

399041003 is a deficient number, since it is larger than the sum of its proper divisors (1).

399041003 is an equidigital number, since it uses as much as digits as its factorization.

399041003 is an odious number, because the sum of its binary digits is odd.

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

The square root of 399041003 is about 19976.0106878225. The cubic root of 399041003 is about 736.2169993366.

Adding to 399041003 its reverse (300140993), we get a palindrome (699181996).

The spelling of 399041003 in words is "three hundred ninety-nine million, forty-one thousand, three".