43143609 has 4 divisors (see below), whose sum is σ = 57524816. Its totient is φ = 28762404.

The previous prime is 43143589. The next prime is 43143613. The reversal of 43143609 is 90634134.

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 not a de Polignac number, because 43143609 - 2⁷ = 43143481 is a prime.

It is a super-2 number, since 2×43143609² = 3722741995089762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43163609) 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, 7190599 + ... + 7190604.

It is an arithmetic number, because the mean of its divisors is an integer number (14381204).

Almost surely, 2^43143609 is an apocalyptic number.

It is an amenable number.

43143609 is a deficient number, since it is larger than the sum of its proper divisors (14381207).

43143609 is a wasteful number, since it uses less digits than its factorization.

43143609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14381206.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 43143609 is about 6568.3794805112. The cubic root of 43143609 is about 350.7293877690.

The spelling of 43143609 in words is "forty-three million, one hundred forty-three thousand, six hundred nine".