63944923 has 8 divisors (see below), whose sum is σ = 73312992. Its totient is φ = 54635136.

The previous prime is 63944921. The next prime is 63944929. The reversal of 63944923 is 32944936.

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 63944923 - 2¹ = 63944921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63944921) 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, 12190 + ... + 16627.

It is an arithmetic number, because the mean of its divisors is an integer number (9164124).

Almost surely, 2^63944923 is an apocalyptic number.

63944923 is a deficient number, since it is larger than the sum of its proper divisors (9368069).

63944923 is a wasteful number, since it uses less digits than its factorization.

63944923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29141.

The product of its digits is 139968, while the sum is 40.

The square root of 63944923 is about 7996.5569465864. The cubic root of 63944923 is about 399.8852233189.

The spelling of 63944923 in words is "sixty-three million, nine hundred forty-four thousand, nine hundred twenty-three".