63889009 has 16 divisors (see below), whose sum is σ = 71943552. Its totient is φ = 56412928.

The previous prime is 63888997. The next prime is 63889019. The reversal of 63889009 is 90098836.

It is not a de Polignac number, because 63889009 - 2⁵ = 63888977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63889019) 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 in 15 ways as a sum of consecutive naturals, for example, 19182 + ... + 22264.

It is an arithmetic number, because the mean of its divisors is an integer number (4496472).

Almost surely, 2^63889009 is an apocalyptic number.

It is an amenable number.

63889009 is a deficient number, since it is larger than the sum of its proper divisors (8054543).

63889009 is a wasteful number, since it uses less digits than its factorization.

63889009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 63889009 is about 7993.0600523204. The cubic root of 63889009 is about 399.7686349513.

The spelling of 63889009 in words is "sixty-three million, eight hundred eighty-nine thousand, nine".