63984069 has 12 divisors (see below), whose sum is σ = 93097836. Its totient is φ = 42343872.

The previous prime is 63984049. The next prime is 63984079. The reversal of 63984069 is 96048936.

63984069 is a `hidden beast` number, since 639 + 8 + 4 + 0 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19027044 + 44957025 = 4362^2 + 6705^2 .

It is not a de Polignac number, because 63984069 - 2²⁰ = 62935493 is a prime.

It is a super-2 number, since 2×63984069² = 8187922171593522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63984049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24714 + ... + 27179.

It is an arithmetic number, because the mean of its divisors is an integer number (7758153).

Almost surely, 2^63984069 is an apocalyptic number.

It is an amenable number.

63984069 is a deficient number, since it is larger than the sum of its proper divisors (29113767).

63984069 is a wasteful number, since it uses less digits than its factorization.

63984069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52036 (or 52033 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 63984069 is about 7999.0042505302. The cubic root of 63984069 is about 399.9668076624.

The spelling of 63984069 in words is "sixty-three million, nine hundred eighty-four thousand, sixty-nine".