63839938 has 8 divisors (see below), whose sum is σ = 95796288. Its totient is φ = 31907844.

The previous prime is 63839921. The next prime is 63839939. The reversal of 63839938 is 83993836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 63839891 and 63839900.

It is not an unprimeable number, because it can be changed into a prime (63839939) 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, 3595 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (11974536).

Almost surely, 2^63839938 is an apocalyptic number.

63839938 is a deficient number, since it is larger than the sum of its proper divisors (31956350).

63839938 is a wasteful number, since it uses less digits than its factorization.

63839938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12128.

The product of its digits is 839808, while the sum is 49.

The square root of 63839938 is about 7989.9898623215. The cubic root of 63839938 is about 399.6662591200. Note that the first 3 decimals are identical.

The spelling of 63839938 in words is "sixty-three million, eight hundred thirty-nine thousand, nine hundred thirty-eight".