63909338 has 4 divisors (see below), whose sum is σ = 95864010. Its totient is φ = 31954668.

The previous prime is 63909311. The next prime is 63909343. The reversal of 63909338 is 83390936.

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

It can be written as a sum of positive squares in only one way, i.e., 39476089 + 24433249 = 6283^2 + 4943^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63909295 and 63909304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15977333 + ... + 15977336.

Almost surely, 2^63909338 is an apocalyptic number.

63909338 is a deficient number, since it is larger than the sum of its proper divisors (31954672).

63909338 is a wasteful number, since it uses less digits than its factorization.

63909338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31954671.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 63909338 is about 7994.3316168395. The cubic root of 63909338 is about 399.8110315747.

The spelling of 63909338 in words is "sixty-three million, nine hundred nine thousand, three hundred thirty-eight".