43109346849 has 4 divisors (see below), whose sum is σ = 57479129136. Its totient is φ = 28739564564.

The previous prime is 43109346823. The next prime is 43109346851. The reversal of 43109346849 is 94864390134.

It is a happy number.

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 43109346849 - 2⁹ = 43109346337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43109346809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7184891139 + ... + 7184891144.

It is an arithmetic number, because the mean of its divisors is an integer number (14369782284).

Almost surely, 2^43109346849 is an apocalyptic number.

It is an amenable number.

43109346849 is a deficient number, since it is larger than the sum of its proper divisors (14369782287).

43109346849 is a wasteful number, since it uses less digits than its factorization.

43109346849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14369782286.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 43109346849 in words is "forty-three billion, one hundred nine million, three hundred forty-six thousand, eight hundred forty-nine".