40347443 has 8 divisors (see below), whose sum is σ = 42861312. Its totient is φ = 37849216.

The previous prime is 40347407. The next prime is 40347473. The reversal of 40347443 is 34474304.

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 40347443 - 2⁸ = 40347187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40347473) 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, 1646 + ... + 9132.

It is an arithmetic number, because the mean of its divisors is an integer number (5357664).

Almost surely, 2^40347443 is an apocalyptic number.

40347443 is a deficient number, since it is larger than the sum of its proper divisors (2513869).

40347443 is a wasteful number, since it uses less digits than its factorization.

40347443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7821.

The product of its (nonzero) digits is 16128, while the sum is 29.

The square root of 40347443 is about 6351.9637121130. The cubic root of 40347443 is about 342.9825347322.

The spelling of 40347443 in words is "forty million, three hundred forty-seven thousand, four hundred forty-three".