63909912 has 32 divisors (see below), whose sum is σ = 174300480. Its totient is φ = 19366560.

The previous prime is 63909907. The next prime is 63909913. The reversal of 63909912 is 21990936.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63909913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120778 + ... + 121305.

It is an arithmetic number, because the mean of its divisors is an integer number (5446890).

Almost surely, 2^63909912 is an apocalyptic number.

It is an amenable number.

63909912 is an abundant number, since it is smaller than the sum of its proper divisors (110390568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63909912 is a wasteful number, since it uses less digits than its factorization.

63909912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242103 (or 242099 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 63909912 is about 7994.3675171961. The cubic root of 63909912 is about 399.8122285352.

The spelling of 63909912 in words is "sixty-three million, nine hundred nine thousand, nine hundred twelve".