40343443 has 4 divisors (see below), whose sum is σ = 46106800. Its totient is φ = 34580088.

The previous prime is 40343423. The next prime is 40343453. The reversal of 40343443 is 34434304.

It is a happy number.

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 40343443 - 2⁹ = 40342931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40343423) 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, 2881668 + ... + 2881681.

It is an arithmetic number, because the mean of its divisors is an integer number (11526700).

Almost surely, 2^40343443 is an apocalyptic number.

40343443 is a deficient number, since it is larger than the sum of its proper divisors (5763357).

40343443 is an equidigital number, since it uses as much as digits as its factorization.

40343443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763356.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 40343443 is about 6351.6488410491. The cubic root of 40343443 is about 342.9712000570.

Adding to 40343443 its reverse (34434304), we get a palindrome (74777747).

The spelling of 40343443 in words is "forty million, three hundred forty-three thousand, four hundred forty-three".