43442993 has 12 divisors (see below), whose sum is σ = 48773760. Its totient is φ = 38648280.

The previous prime is 43442989. The next prime is 43443011. The reversal of 43442993 is 39924434.

43442993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43442993 - 2² = 43442989 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43442933) 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 11 ways as a sum of consecutive naturals, for example, 1868 + ... + 9506.

It is an arithmetic number, because the mean of its divisors is an integer number (4064480).

Almost surely, 2^43442993 is an apocalyptic number.

It is an amenable number.

43442993 is a deficient number, since it is larger than the sum of its proper divisors (5330767).

43442993 is a wasteful number, since it uses less digits than its factorization.

43442993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7708 (or 7697 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 43442993 is about 6591.1298727912. The cubic root of 43442993 is about 351.5387839659.

It can be divided in two parts, 4344 and 2993, that added together give a palindrome (7337).

The spelling of 43442993 in words is "forty-three million, four hundred forty-two thousand, nine hundred ninety-three".