43270609 has 4 divisors (see below), whose sum is σ = 43690816. Its totient is φ = 42850404.

The previous prime is 43270607. The next prime is 43270651. The reversal of 43270609 is 90607234.

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.

It is a cyclic number.

It is not a de Polignac number, because 43270609 - 2¹ = 43270607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43270603) 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, 209949 + ... + 210154.

It is an arithmetic number, because the mean of its divisors is an integer number (10922704).

Almost surely, 2^43270609 is an apocalyptic number.

It is an amenable number.

43270609 is a deficient number, since it is larger than the sum of its proper divisors (420207).

43270609 is a wasteful number, since it uses less digits than its factorization.

43270609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420206.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 43270609 is about 6578.0399056254. The cubic root of 43270609 is about 351.0731930164.

The spelling of 43270609 in words is "forty-three million, two hundred seventy thousand, six hundred nine".