43943947822749 has 64 divisors (see below), whose sum is σ = 63726040383488. Its totient is φ = 26774632684800.

The previous prime is 43943947822739. The next prime is 43943947822751. The reversal of 43943947822749 is 94722874934934.

It is not a de Polignac number, because 43943947822749 - 2²⁰ = 43943946774173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43943947822739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5364902244 + ... + 5364910434.

It is an arithmetic number, because the mean of its divisors is an integer number (995719380992).

Almost surely, 2^{43943947822749} is an apocalyptic number.

It is an amenable number.

43943947822749 is a deficient number, since it is larger than the sum of its proper divisors (19782092560739).

43943947822749 is a wasteful number, since it uses less digits than its factorization.

43943947822749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418.

The product of its digits is 2633637888, while the sum is 75.

The spelling of 43943947822749 in words is "forty-three trillion, nine hundred forty-three billion, nine hundred forty-seven million, eight hundred twenty-two thousand, seven hundred forty-nine".