3998090839 has 2 divisors, whose sum is σ = 3998090840. Its totient is φ = 3998090838.

The previous prime is 3998090797. The next prime is 3998090849. The reversal of 3998090839 is 9380908993.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3998090839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3998090849) 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, 1999045419 + 1999045420.

It is an arithmetic number, because the mean of its divisors is an integer number (1999045420).

Almost surely, 2^3998090839 is an apocalyptic number.

3998090839 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998090839 is an equidigital number, since it uses as much as digits as its factorization.

3998090839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The square root of 3998090839 is about 63230.4581590233. The cubic root of 3998090839 is about 1587.1484614293.

The spelling of 3998090839 in words is "three billion, nine hundred ninety-eight million, ninety thousand, eight hundred thirty-nine".