63783969 has 16 divisors (see below), whose sum is σ = 90753600. Its totient is φ = 39730176.

The previous prime is 63783961. The next prime is 63783971. The reversal of 63783969 is 96938736.

It is a happy number.

It is not a de Polignac number, because 63783969 - 2³ = 63783961 is a prime.

It is a super-2 number, since 2×63783969² = 8136789402785922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63783961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3504 + ... + 11825.

It is an arithmetic number, because the mean of its divisors is an integer number (5672100).

Almost surely, 2^63783969 is an apocalyptic number.

It is an amenable number.

63783969 is a deficient number, since it is larger than the sum of its proper divisors (26969631).

63783969 is a wasteful number, since it uses less digits than its factorization.

63783969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15424.

The product of its digits is 1469664, while the sum is 51.

The square root of 63783969 is about 7986.4866493346. The cubic root of 63783969 is about 399.5494280696.

The spelling of 63783969 in words is "sixty-three million, seven hundred eighty-three thousand, nine hundred sixty-nine".