63919943 has 8 divisors (see below), whose sum is σ = 66459120. Its totient is φ = 61427520.

The previous prime is 63919937. The next prime is 63919963. The reversal of 63919943 is 34991936.

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 63919943 - 2¹² = 63915847 is a prime.

It is a super-2 number, since 2×63919943² = 8171518226246498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63919894 and 63919903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63919903) 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, 8888 + ... + 14381.

It is an arithmetic number, because the mean of its divisors is an integer number (8307390).

Almost surely, 2^63919943 is an apocalyptic number.

63919943 is a deficient number, since it is larger than the sum of its proper divisors (2539177).

63919943 is a wasteful number, since it uses less digits than its factorization.

63919943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23377.

The product of its digits is 157464, while the sum is 44.

The square root of 63919943 is about 7994.9948717932. The cubic root of 63919943 is about 399.8331449915.

The spelling of 63919943 in words is "sixty-three million, nine hundred nineteen thousand, nine hundred forty-three".