43241989 has 4 divisors (see below), whose sum is σ = 49419424. Its totient is φ = 37064556.

The previous prime is 43241981. The next prime is 43242013. The reversal of 43241989 is 98914234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98914234 = 2 ⋅49457117.

It is a cyclic number.

It is not a de Polignac number, because 43241989 - 2³ = 43241981 is a prime.

It is a super-2 number, since 2×43241989² = 3739739225352242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43241981) 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, 3088707 + ... + 3088720.

It is an arithmetic number, because the mean of its divisors is an integer number (12354856).

Almost surely, 2^43241989 is an apocalyptic number.

It is an amenable number.

43241989 is a deficient number, since it is larger than the sum of its proper divisors (6177435).

43241989 is an equidigital number, since it uses as much as digits as its factorization.

43241989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6177434.

The product of its digits is 62208, while the sum is 40.

The square root of 43241989 is about 6575.8641257252. The cubic root of 43241989 is about 350.9957737929.

The spelling of 43241989 in words is "forty-three million, two hundred forty-one thousand, nine hundred eighty-nine".