63398919 has 8 divisors (see below), whose sum is σ = 84596992. Its totient is φ = 42233400.

The previous prime is 63398917. The next prime is 63398957. The reversal of 63398919 is 91989336.

It is a happy number.

63398919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 63398919 - 2¹ = 63398917 is a prime.

It is a super-2 number, since 2×63398919² = 8038845860737122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63398917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3157 + ... + 11694.

It is an arithmetic number, because the mean of its divisors is an integer number (10574624).

Almost surely, 2^63398919 is an apocalyptic number.

63398919 is a deficient number, since it is larger than the sum of its proper divisors (21198073).

63398919 is a wasteful number, since it uses less digits than its factorization.

63398919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16277.

The product of its digits is 314928, while the sum is 48.

The square root of 63398919 is about 7962.3438132248. The cubic root of 63398919 is about 398.7438069943.

The spelling of 63398919 in words is "sixty-three million, three hundred ninety-eight thousand, nine hundred nineteen".