43407071 has 4 divisors (see below), whose sum is σ = 43555512. Its totient is φ = 43258632.

The previous prime is 43407061. The next prime is 43407079. The reversal of 43407071 is 17070434.

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 43407071 - 2¹⁰ = 43406047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43407071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43407079) 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, 73781 + ... + 74366.

It is an arithmetic number, because the mean of its divisors is an integer number (10888878).

Almost surely, 2^43407071 is an apocalyptic number.

43407071 is a deficient number, since it is larger than the sum of its proper divisors (148441).

43407071 is a wasteful number, since it uses less digits than its factorization.

43407071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148440.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 43407071 is about 6588.4042832844. The cubic root of 43407071 is about 351.4418641674.

It can be divided in two parts, 4340 and 7071, that added together give a palindrome (11411).

The spelling of 43407071 in words is "forty-three million, four hundred seven thousand, seventy-one".