63989450 has 48 divisors (see below), whose sum is σ = 141955200. Its totient is φ = 20982720.

The previous prime is 63989449. The next prime is 63989467. The reversal of 63989450 is 5498936.

63989450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63989450² = 8189299422605000, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4076 + ... + 12024.

It is an arithmetic number, because the mean of its divisors is an integer number (2957400).

Almost surely, 2^63989450 is an apocalyptic number.

63989450 is an abundant number, since it is smaller than the sum of its proper divisors (77965750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63989450 is a wasteful number, since it uses less digits than its factorization.

63989450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991 (or 7986 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 63989450 is about 7999.3405978243. The cubic root of 63989450 is about 399.9780196255.

The spelling of 63989450 in words is "sixty-three million, nine hundred eighty-nine thousand, four hundred fifty".