63934889 has 4 divisors (see below), whose sum is σ = 63981060. Its totient is φ = 63888720.

The previous prime is 63934877. The next prime is 63934901. The reversal of 63934889 is 98843936.

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

It is an interprime number because it is at equal distance from previous prime (63934877) and next prime (63934901).

It can be written as a sum of positive squares in 2 ways, for example, as 1651225 + 62283664 = 1285^2 + 7892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63934889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63934859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20942 + ... + 23799.

It is an arithmetic number, because the mean of its divisors is an integer number (15995265).

Almost surely, 2^63934889 is an apocalyptic number.

It is an amenable number.

63934889 is a deficient number, since it is larger than the sum of its proper divisors (46171).

63934889 is a wasteful number, since it uses less digits than its factorization.

63934889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46170.

The product of its digits is 1119744, while the sum is 50.

The square root of 63934889 is about 7995.9295269531. The cubic root of 63934889 is about 399.8643060564.

The spelling of 63934889 in words is "sixty-three million, nine hundred thirty-four thousand, eight hundred eighty-nine".