40043671 has 8 divisors (see below), whose sum is σ = 40985280. Its totient is φ = 39105888.

The previous prime is 40043669. The next prime is 40043701. The reversal of 40043671 is 17634004.

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 40043671 - 2¹ = 40043669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36925 + ... + 37993.

It is an arithmetic number, because the mean of its divisors is an integer number (5123160).

Almost surely, 2^40043671 is an apocalyptic number.

40043671 is a deficient number, since it is larger than the sum of its proper divisors (941609).

40043671 is a wasteful number, since it uses less digits than its factorization.

40043671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 40043671 is about 6328.0068742061. The cubic root of 40043671 is about 342.1196046677.

Adding to 40043671 its reverse (17634004), we get a palindrome (57677675).

The spelling of 40043671 in words is "forty million, forty-three thousand, six hundred seventy-one".