63909589 has 2 divisors, whose sum is σ = 63909590. Its totient is φ = 63909588.

The previous prime is 63909583. The next prime is 63909683. The reversal of 63909589 is 98590936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44328964 + 19580625 = 6658^2 + 4425^2 .

It is a cyclic number.

It is not a de Polignac number, because 63909589 - 2³ = 63909581 is a prime.

It is a super-2 number, since 2×63909589² = 8168871132297842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63909581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31954794 + 31954795.

It is an arithmetic number, because the mean of its divisors is an integer number (31954795).

Almost surely, 2^63909589 is an apocalyptic number.

It is an amenable number.

63909589 is a deficient number, since it is larger than the sum of its proper divisors (1).

63909589 is an equidigital number, since it uses as much as digits as its factorization.

63909589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 63909589 is about 7994.3473154473. The cubic root of 63909589 is about 399.8115549851.

The spelling of 63909589 in words is "sixty-three million, nine hundred nine thousand, five hundred eighty-nine".