63438367 has 4 divisors (see below), whose sum is σ = 63454536. Its totient is φ = 63422200.

The previous prime is 63438337. The next prime is 63438409. The reversal of 63438367 is 76383436.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63438367 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian 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 (63438317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968 + ... + 11434.

It is an arithmetic number, because the mean of its divisors is an integer number (15863634).

Almost surely, 2^63438367 is an apocalyptic number.

63438367 is a deficient number, since it is larger than the sum of its proper divisors (16169).

63438367 is an equidigital number, since it uses as much as digits as its factorization.

63438367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16168.

The product of its digits is 217728, while the sum is 40.

The square root of 63438367 is about 7964.8205880610. The cubic root of 63438367 is about 398.8264918131.

The spelling of 63438367 in words is "sixty-three million, four hundred thirty-eight thousand, three hundred sixty-seven".