63489889 has 2 divisors, whose sum is σ = 63489890. Its totient is φ = 63489888.

The previous prime is 63489871. The next prime is 63489901. The reversal of 63489889 is 98898436.

63489889 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 can be written as a sum of positive squares in only one way, i.e., 33732864 + 29757025 = 5808^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 63489889 - 2¹¹ = 63487841 is a prime.

It is not a weakly prime, because it can be changed into another prime (63489989) 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, 31744944 + 31744945.

It is an arithmetic number, because the mean of its divisors is an integer number (31744945).

Almost surely, 2^63489889 is an apocalyptic number.

It is an amenable number.

63489889 is a deficient number, since it is larger than the sum of its proper divisors (1).

63489889 is an equidigital number, since it uses as much as digits as its factorization.

63489889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 55.

The square root of 63489889 is about 7968.0542794336. The cubic root of 63489889 is about 398.9344326863.

The spelling of 63489889 in words is "sixty-three million, four hundred eighty-nine thousand, eight hundred eighty-nine".