63329989 has 2 divisors, whose sum is σ = 63329990. Its totient is φ = 63329988.

The previous prime is 63329963. The next prime is 63330037. The reversal of 63329989 is 98992336.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63329764 + 225 = 7958^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 63329989 - 2⁵ = 63329957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63329389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31664994 + 31664995.

It is an arithmetic number, because the mean of its divisors is an integer number (31664995).

Almost surely, 2^63329989 is an apocalyptic number.

It is an amenable number.

63329989 is a deficient number, since it is larger than the sum of its proper divisors (1).

63329989 is an equidigital number, since it uses as much as digits as its factorization.

63329989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 49.

The square root of 63329989 is about 7958.0141367052. The cubic root of 63329989 is about 398.5992441838.

The spelling of 63329989 in words is "sixty-three million, three hundred twenty-nine thousand, nine hundred eighty-nine".