43974143 has 4 divisors (see below), whose sum is σ = 44197560. Its totient is φ = 43750728.

The previous prime is 43974109. The next prime is 43974169. The reversal of 43974143 is 34147934.

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 43974143 - 2⁸ = 43973887 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 (43974173) 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, 111413 + ... + 111806.

It is an arithmetic number, because the mean of its divisors is an integer number (11049390).

Almost surely, 2^43974143 is an apocalyptic number.

43974143 is a deficient number, since it is larger than the sum of its proper divisors (223417).

43974143 is a wasteful number, since it uses less digits than its factorization.

43974143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223416.

The product of its digits is 36288, while the sum is 35.

The square root of 43974143 is about 6631.3002495740. The cubic root of 43974143 is about 352.9656652719.

The spelling of 43974143 in words is "forty-three million, nine hundred seventy-four thousand, one hundred forty-three".