43402271 has 4 divisors (see below), whose sum is σ = 47347944. Its totient is φ = 39456600.

The previous prime is 43402259. The next prime is 43402279. The reversal of 43402271 is 17220434.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43402271 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 (43402279) 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, 1972820 + ... + 1972841.

It is an arithmetic number, because the mean of its divisors is an integer number (11836986).

Almost surely, 2^43402271 is an apocalyptic number.

43402271 is a deficient number, since it is larger than the sum of its proper divisors (3945673).

43402271 is a wasteful number, since it uses less digits than its factorization.

43402271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945672.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 43402271 is about 6588.0399968428. The cubic root of 43402271 is about 351.4289094184.

The spelling of 43402271 in words is "forty-three million, four hundred two thousand, two hundred seventy-one".