43538089 has 4 divisors (see below), whose sum is σ = 49757824. Its totient is φ = 37318356.

The previous prime is 43538083. The next prime is 43538107. The reversal of 43538089 is 98083534.

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: 98083534 = 2 ⋅49041767.

It is a cyclic number.

It is not a de Polignac number, because 43538089 - 2¹³ = 43529897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43538083) 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, 3109857 + ... + 3109870.

It is an arithmetic number, because the mean of its divisors is an integer number (12439456).

Almost surely, 2^43538089 is an apocalyptic number.

It is an amenable number.

43538089 is a deficient number, since it is larger than the sum of its proper divisors (6219735).

43538089 is an equidigital number, since it uses as much as digits as its factorization.

43538089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219734.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 43538089 is about 6598.3398669665. The cubic root of 43538089 is about 351.7951012451.

The spelling of 43538089 in words is "forty-three million, five hundred thirty-eight thousand, eighty-nine".