43219955 has 4 divisors (see below), whose sum is σ = 51863952. Its totient is φ = 34575960.

The previous prime is 43219937. The next prime is 43219987. The reversal of 43219955 is 55991234.

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

It is not a de Polignac number, because 43219955 - 2²⁴ = 26442739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4321991 + ... + 4322000.

It is an arithmetic number, because the mean of its divisors is an integer number (12965988).

Almost surely, 2^43219955 is an apocalyptic number.

43219955 is a deficient number, since it is larger than the sum of its proper divisors (8643997).

43219955 is an equidigital number, since it uses as much as digits as its factorization.

43219955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8643996.

The product of its digits is 48600, while the sum is 38.

The square root of 43219955 is about 6574.1885430827. The cubic root of 43219955 is about 350.9361469116.

The spelling of 43219955 in words is "forty-three million, two hundred nineteen thousand, nine hundred fifty-five".