43309049 has 4 divisors (see below), whose sum is σ = 49496064. Its totient is φ = 37122036.

The previous prime is 43309039. The next prime is 43309061. The reversal of 43309049 is 94090334.

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 43309049 - 2¹⁶ = 43243513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43309039) 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, 3093497 + ... + 3093510.

It is an arithmetic number, because the mean of its divisors is an integer number (12374016).

Almost surely, 2^43309049 is an apocalyptic number.

It is an amenable number.

43309049 is a deficient number, since it is larger than the sum of its proper divisors (6187015).

43309049 is an equidigital number, since it uses as much as digits as its factorization.

43309049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187014.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 43309049 is about 6580.9611000218. The cubic root of 43309049 is about 351.1771223702.

The spelling of 43309049 in words is "forty-three million, three hundred nine thousand, forty-nine".