63944799 has 4 divisors (see below), whose sum is σ = 85259736. Its totient is φ = 42629864.

The previous prime is 63944767. The next prime is 63944851. The reversal of 63944799 is 99744936.

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

It is a cyclic number.

It is not a de Polignac number, because 63944799 - 2⁵ = 63944767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63944719) 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, 10657464 + ... + 10657469.

It is an arithmetic number, because the mean of its divisors is an integer number (21314934).

Almost surely, 2^63944799 is an apocalyptic number.

63944799 is a deficient number, since it is larger than the sum of its proper divisors (21314937).

63944799 is a wasteful number, since it uses less digits than its factorization.

63944799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21314936.

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

The square root of 63944799 is about 7996.5491932458. The cubic root of 63944799 is about 399.8849648371.

The spelling of 63944799 in words is "sixty-three million, nine hundred forty-four thousand, seven hundred ninety-nine".