43968487 has 4 divisors (see below), whose sum is σ = 44127496. Its totient is φ = 43809480.

The previous prime is 43968481. The next prime is 43968493. The reversal of 43968487 is 78486934.

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

It is an interprime number because it is at equal distance from previous prime (43968481) and next prime (43968493).

It is a cyclic number.

It is not a de Polignac number, because 43968487 - 2²³ = 35579879 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 43968487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43968481) 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, 79089 + ... + 79642.

It is an arithmetic number, because the mean of its divisors is an integer number (11031874).

Almost surely, 2^43968487 is an apocalyptic number.

43968487 is a deficient number, since it is larger than the sum of its proper divisors (159009).

43968487 is a wasteful number, since it uses less digits than its factorization.

43968487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159008.

The product of its digits is 1161216, while the sum is 49.

The square root of 43968487 is about 6630.8737734932. The cubic root of 43968487 is about 352.9505316861.

The spelling of 43968487 in words is "forty-three million, nine hundred sixty-eight thousand, four hundred eighty-seven".