63900447 has 8 divisors (see below), whose sum is σ = 91754544. Its totient is φ = 39323328.

The previous prime is 63900437. The next prime is 63900461. The reversal of 63900447 is 74400936.

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

It is not a de Polignac number, because 63900447 - 2¹⁴ = 63884063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63900437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819198 + ... + 819275.

It is an arithmetic number, because the mean of its divisors is an integer number (11469318).

Almost surely, 2^63900447 is an apocalyptic number.

63900447 is a deficient number, since it is larger than the sum of its proper divisors (27854097).

63900447 is a wasteful number, since it uses less digits than its factorization.

63900447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638489.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 63900447 is about 7993.7755159874. The cubic root of 63900447 is about 399.7924902846.

The spelling of 63900447 in words is "sixty-three million, nine hundred thousand, four hundred forty-seven".