399142033 has 2 divisors, whose sum is σ = 399142034. Its totient is φ = 399142032.

The previous prime is 399141983. The next prime is 399142067. The reversal of 399142033 is 330241993.

It is an a-pointer prime, because the next prime (399142067) can be obtained adding 399142033 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399080529 + 61504 = 19977^2 + 248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399142033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399142033.

It is not a weakly prime, because it can be changed into another prime (399142433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199571016 + 199571017.

It is an arithmetic number, because the mean of its divisors is an integer number (199571017).

Almost surely, 2^399142033 is an apocalyptic number.

It is an amenable number.

399142033 is a deficient number, since it is larger than the sum of its proper divisors (1).

399142033 is an equidigital number, since it uses as much as digits as its factorization.

399142033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 399142033 is about 19978.5393109707. The cubic root of 399142033 is about 736.2791263917.

The spelling of 399142033 in words is "three hundred ninety-nine million, one hundred forty-two thousand, thirty-three".