43990063 has 8 divisors (see below), whose sum is σ = 47441408. Its totient is φ = 40548384.

The previous prime is 43990061. The next prime is 43990081. The reversal of 43990063 is 36009934.

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 43990063 - 2¹ = 43990061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43990061) 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, 9106 + ... + 13072.

It is an arithmetic number, because the mean of its divisors is an integer number (5930176).

Almost surely, 2^43990063 is an apocalyptic number.

43990063 is a deficient number, since it is larger than the sum of its proper divisors (3451345).

43990063 is a wasteful number, since it uses less digits than its factorization.

43990063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 43990063 is about 6632.5005088579. The cubic root of 43990063 is about 353.0082549624.

Adding to 43990063 its reverse (36009934), we get a palindrome (79999997).

The spelling of 43990063 in words is "forty-three million, nine hundred ninety thousand, sixty-three".