40544243 has 4 divisors (see below), whose sum is σ = 40723080. Its totient is φ = 40365408.

The previous prime is 40544219. The next prime is 40544261. The reversal of 40544243 is 34244504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40544243 - 2¹² = 40540147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40544263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89078 + ... + 89531.

It is an arithmetic number, because the mean of its divisors is an integer number (10180770).

Almost surely, 2^40544243 is an apocalyptic number.

40544243 is a deficient number, since it is larger than the sum of its proper divisors (178837).

40544243 is a wasteful number, since it uses less digits than its factorization.

40544243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178836.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 40544243 is about 6367.4361402373. The cubic root of 40544243 is about 343.5392781026.

Adding to 40544243 its reverse (34244504), we get a palindrome (74788747).

The spelling of 40544243 in words is "forty million, five hundred forty-four thousand, two hundred forty-three".