63949938 has 24 divisors (see below), whose sum is σ = 138497328. Its totient is φ = 19676592.

The previous prime is 63949927. The next prime is 63949979. The reversal of 63949938 is 83994936.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30520 + ... + 32547.

It is an arithmetic number, because the mean of its divisors is an integer number (5770722).

Almost surely, 2^63949938 is an apocalyptic number.

63949938 is an abundant number, since it is smaller than the sum of its proper divisors (74547390).

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

63949938 is a wasteful number, since it uses less digits than its factorization.

63949938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63098 (or 63085 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 51.

The square root of 63949938 is about 7996.8705128944. The cubic root of 63949938 is about 399.8956769608.

The spelling of 63949938 in words is "sixty-three million, nine hundred forty-nine thousand, nine hundred thirty-eight".