63483991 has 4 divisors (see below), whose sum is σ = 63561400. Its totient is φ = 63406584.

The previous prime is 63483977. The next prime is 63484009. The reversal of 63483991 is 19938436.

63483991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63483991 - 2¹⁹ = 62959703 is a prime.

It is a super-2 number, since 2×63483991² = 8060434226576162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63483911) 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 3 ways as a sum of consecutive naturals, for example, 37461 + ... + 39118.

It is an arithmetic number, because the mean of its divisors is an integer number (15890350).

Almost surely, 2^63483991 is an apocalyptic number.

63483991 is a deficient number, since it is larger than the sum of its proper divisors (77409).

63483991 is an equidigital number, since it uses as much as digits as its factorization.

63483991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77408.

The product of its digits is 139968, while the sum is 43.

The square root of 63483991 is about 7967.6841679374. The cubic root of 63483991 is about 398.9220790755.

The spelling of 63483991 in words is "sixty-three million, four hundred eighty-three thousand, nine hundred ninety-one".