63894395 has 8 divisors (see below), whose sum is σ = 79317360. Its totient is φ = 49352800.

The previous prime is 63894361. The next prime is 63894403. The reversal of 63894395 is 59349836.

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

It is not a de Polignac number, because 63894395 - 2¹⁶ = 63828859 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 220181 + ... + 220470.

It is an arithmetic number, because the mean of its divisors is an integer number (9914670).

Almost surely, 2^63894395 is an apocalyptic number.

63894395 is a deficient number, since it is larger than the sum of its proper divisors (15422965).

63894395 is a wasteful number, since it uses less digits than its factorization.

63894395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440685.

The product of its digits is 699840, while the sum is 47.

The square root of 63894395 is about 7993.3969624935. The cubic root of 63894395 is about 399.7798684608.

The spelling of 63894395 in words is "sixty-three million, eight hundred ninety-four thousand, three hundred ninety-five".