63999458 has 16 divisors (see below), whose sum is σ = 102658104. Its totient is φ = 29817600.

The previous prime is 63999457. The next prime is 63999473. The reversal of 63999458 is 85499936.

63999458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 57714409 + 6285049 = 7597^2 + 2507^2 .

It is not an unprimeable number, because it can be changed into a prime (63999457) 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 in 7 ways as a sum of consecutive naturals, for example, 5885 + ... + 12752.

Almost surely, 2^63999458 is an apocalyptic number.

63999458 is a deficient number, since it is larger than the sum of its proper divisors (38658646).

63999458 is a wasteful number, since it uses less digits than its factorization.

63999458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18757.

The product of its digits is 2099520, while the sum is 53.

The square root of 63999458 is about 7999.9661249283. The cubic root of 63999458 is about 399.9988708301.

The spelling of 63999458 in words is "sixty-three million, nine hundred ninety-nine thousand, four hundred fifty-eight".