4199039939 has 2 divisors, whose sum is σ = 4199039940. Its totient is φ = 4199039938.

The previous prime is 4199039921. The next prime is 4199039941. The reversal of 4199039939 is 9399309914.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4199039939 is a prime.

Together with 4199039941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4199039839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2099519969 + 2099519970.

It is an arithmetic number, because the mean of its divisors is an integer number (2099519970).

Almost surely, 2^4199039939 is an apocalyptic number.

4199039939 is a deficient number, since it is larger than the sum of its proper divisors (1).

4199039939 is an equidigital number, since it uses as much as digits as its factorization.

4199039939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2125764, while the sum is 56.

The square root of 4199039939 is about 64799.9995293210. Note that the first 3 decimals coincide. The cubic root of 4199039939 is about 1613.3057009483.

The spelling of 4199039939 in words is "four billion, one hundred ninety-nine million, thirty-nine thousand, nine hundred thirty-nine".