63899811 has 12 divisors (see below), whose sum is σ = 92415960. Its totient is φ = 42546240.

The previous prime is 63899807. The next prime is 63899827. The reversal of 63899811 is 11899836.

63899811 is a `hidden beast` number, since 638 + 9 + 9 + 8 + 1 + 1 = 666.

63899811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63899811 - 2² = 63899807 is a prime.

It is a super-3 number, since 3×63899811³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (63891811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3900 + ... + 11958.

It is an arithmetic number, because the mean of its divisors is an integer number (7701330).

Almost surely, 2^63899811 is an apocalyptic number.

63899811 is a deficient number, since it is larger than the sum of its proper divisors (28516149).

63899811 is a wasteful number, since it uses less digits than its factorization.

63899811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8946 (or 8943 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 63899811 is about 7993.7357349365. The cubic root of 63899811 is about 399.7911639044.

The spelling of 63899811 in words is "sixty-three million, eight hundred ninety-nine thousand, eight hundred eleven".