43499971 has 8 divisors (see below), whose sum is σ = 45219600. Its totient is φ = 41795040.

The previous prime is 43499947. The next prime is 43499977. The reversal of 43499971 is 17999434.

43499971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43499971 - 2²⁵ = 9945539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43499977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2565 + ... + 9673.

It is an arithmetic number, because the mean of its divisors is an integer number (5652450).

Almost surely, 2^43499971 is an apocalyptic number.

43499971 is a deficient number, since it is larger than the sum of its proper divisors (1719629).

43499971 is a wasteful number, since it uses less digits than its factorization.

43499971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7349.

The product of its digits is 244944, while the sum is 46.

The square root of 43499971 is about 6595.4507806518. The cubic root of 43499971 is about 351.6924046460.

The spelling of 43499971 in words is "forty-three million, four hundred ninety-nine thousand, nine hundred seventy-one".