63399387 has 8 divisors (see below), whose sum is σ = 84666960. Its totient is φ = 42199040.

The previous prime is 63399383. The next prime is 63399397. The reversal of 63399387 is 78399336.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 63399387 - 2² = 63399383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63399383) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 14562 + ... + 18407.

It is an arithmetic number, because the mean of its divisors is an integer number (10583370).

Almost surely, 2^63399387 is an apocalyptic number.

63399387 is a deficient number, since it is larger than the sum of its proper divisors (21267573).

63399387 is a wasteful number, since it uses less digits than its factorization.

63399387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33613.

The product of its digits is 734832, while the sum is 48.

The square root of 63399387 is about 7962.3732015022. The cubic root of 63399387 is about 398.7447881448.

The spelling of 63399387 in words is "sixty-three million, three hundred ninety-nine thousand, three hundred eighty-seven".