43255399 has 4 divisors (see below), whose sum is σ = 47187720. Its totient is φ = 39323080.

The previous prime is 43255391. The next prime is 43255417. The reversal of 43255399 is 99355234.

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 43255399 - 2³ = 43255391 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 (43255391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1966144 + ... + 1966165.

It is an arithmetic number, because the mean of its divisors is an integer number (11796930).

Almost surely, 2^43255399 is an apocalyptic number.

43255399 is a deficient number, since it is larger than the sum of its proper divisors (3932321).

43255399 is a wasteful number, since it uses less digits than its factorization.

43255399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932320.

The product of its digits is 145800, while the sum is 40.

The square root of 43255399 is about 6576.8836845424. The cubic root of 43255399 is about 351.0320530897.

The spelling of 43255399 in words is "forty-three million, two hundred fifty-five thousand, three hundred ninety-nine".