4003959863 has 2 divisors, whose sum is σ = 4003959864. Its totient is φ = 4003959862.

The previous prime is 4003959823. The next prime is 4003959877. The reversal of 4003959863 is 3689593004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4003959863 - 2²⁰ = 4002911287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4003959823) 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 as a sum of consecutive naturals, namely, 2001979931 + 2001979932.

It is an arithmetic number, because the mean of its divisors is an integer number (2001979932).

Almost surely, 2^4003959863 is an apocalyptic number.

4003959863 is a deficient number, since it is larger than the sum of its proper divisors (1).

4003959863 is an equidigital number, since it uses as much as digits as its factorization.

4003959863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 4003959863 is about 63276.8509251211. The cubic root of 4003959863 is about 1587.9247034315.

The spelling of 4003959863 in words is "four billion, three million, nine hundred fifty-nine thousand, eight hundred sixty-three".