43424865 has 48 divisors (see below), whose sum is σ = 84367296. Its totient is φ = 20476800.

The previous prime is 43424839. The next prime is 43424869. The reversal of 43424865 is 56842434.

It is not a de Polignac number, because 43424865 - 2⁵ = 43424833 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (43424869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17130 + ... + 19500.

It is an arithmetic number, because the mean of its divisors is an integer number (1757652).

Almost surely, 2^43424865 is an apocalyptic number.

43424865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43424865 is a deficient number, since it is larger than the sum of its proper divisors (40942431).

43424865 is a wasteful number, since it uses less digits than its factorization.

43424865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430 (or 2427 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 43424865 is about 6589.7545477810. The cubic root of 43424865 is about 351.4898801708.

Subtracting 43424865 from its reverse (56842434), we obtain a square (13417569 = 3663²).

The spelling of 43424865 in words is "forty-three million, four hundred twenty-four thousand, eight hundred sixty-five".