63990799 has 2 divisors, whose sum is σ = 63990800. Its totient is φ = 63990798.

The previous prime is 63990763. The next prime is 63990821. The reversal of 63990799 is 99709936.

63990799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63990799 - 2¹⁵ = 63958031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63990599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31995399 + 31995400.

It is an arithmetic number, because the mean of its divisors is an integer number (31995400).

Almost surely, 2^63990799 is an apocalyptic number.

63990799 is a deficient number, since it is larger than the sum of its proper divisors (1).

63990799 is an equidigital number, since it uses as much as digits as its factorization.

63990799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 826686, while the sum is 52.

The square root of 63990799 is about 7999.4249168300. The cubic root of 63990799 is about 399.9808303313.

The spelling of 63990799 in words is "sixty-three million, nine hundred ninety thousand, seven hundred ninety-nine".