40047443 has 8 divisors (see below), whose sum is σ = 41425920. Its totient is φ = 38674440.

The previous prime is 40047437. The next prime is 40047451. The reversal of 40047443 is 34474004.

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 40047443 - 2⁸ = 40047187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40047473) 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, 18146 + ... + 20232.

It is an arithmetic number, because the mean of its divisors is an integer number (5178240).

Almost surely, 2^40047443 is an apocalyptic number.

40047443 is a deficient number, since it is larger than the sum of its proper divisors (1378477).

40047443 is a wasteful number, since it uses less digits than its factorization.

40047443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 40047443 is about 6328.3049073192. The cubic root of 40047443 is about 342.1303465619.

The spelling of 40047443 in words is "forty million, forty-seven thousand, four hundred forty-three".