63409838 has 4 divisors (see below), whose sum is σ = 95114760. Its totient is φ = 31704918.

The previous prime is 63409831. The next prime is 63409861. The reversal of 63409838 is 83890436.

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

It is a junction number, because it is equal to n+sod(n) for n = 63409795 and 63409804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63409831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15852458 + ... + 15852461.

It is an arithmetic number, because the mean of its divisors is an integer number (23778690).

Almost surely, 2^63409838 is an apocalyptic number.

63409838 is a deficient number, since it is larger than the sum of its proper divisors (31704922).

63409838 is a wasteful number, since it uses less digits than its factorization.

63409838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31704921.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 63409838 is about 7963.0294486458. The cubic root of 63409838 is about 398.7666971517.

The spelling of 63409838 in words is "sixty-three million, four hundred nine thousand, eight hundred thirty-eight".