43989126947 has 4 divisors (see below), whose sum is σ = 44002102656. Its totient is φ = 43976151240.

The previous prime is 43989126899. The next prime is 43989126959. The reversal of 43989126947 is 74962198934.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43989126947 - 2³² = 39694159651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43989126947.

It is not an unprimeable number, because it can be changed into a prime (43989126977) 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, 6482768 + ... + 6489549.

It is an arithmetic number, because the mean of its divisors is an integer number (11000525664).

Almost surely, 2^43989126947 is an apocalyptic number.

43989126947 is a deficient number, since it is larger than the sum of its proper divisors (12975709).

43989126947 is a wasteful number, since it uses less digits than its factorization.

43989126947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12975708.

The product of its digits is 23514624, while the sum is 62.

The spelling of 43989126947 in words is "forty-three billion, nine hundred eighty-nine million, one hundred twenty-six thousand, nine hundred forty-seven".