43440243 has 32 divisors (see below), whose sum is σ = 72548352. Its totient is φ = 22461600.

The previous prime is 43440239. The next prime is 43440263. The reversal of 43440243 is 34204434.

It is a happy number.

It is not a de Polignac number, because 43440243 - 2² = 43440239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43440203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88228 + ... + 88718.

It is an arithmetic number, because the mean of its divisors is an integer number (2267136).

Almost surely, 2^43440243 is an apocalyptic number.

43440243 is a deficient number, since it is larger than the sum of its proper divisors (29108109).

43440243 is a wasteful number, since it uses less digits than its factorization.

43440243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 43440243 is about 6590.9212557881. The cubic root of 43440243 is about 351.5313661832.

Adding to 43440243 its reverse (34204434), we get a palindrome (77644677).

The spelling of 43440243 in words is "forty-three million, four hundred forty thousand, two hundred forty-three".