43982279149 has 4 divisors (see below), whose sum is σ = 44023733820. Its totient is φ = 43940824480.

The previous prime is 43982279141. The next prime is 43982279153. The reversal of 43982279149 is 94197228934.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13066090249 + 30916188900 = 114307^2 + 175830^2 .

It is a cyclic number.

It is not a de Polignac number, because 43982279149 - 2³ = 43982279141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43982279093 and 43982279102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43982279141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20725744 + ... + 20727865.

It is an arithmetic number, because the mean of its divisors is an integer number (11005933455).

Almost surely, 2^43982279149 is an apocalyptic number.

It is an amenable number.

43982279149 is a deficient number, since it is larger than the sum of its proper divisors (41454671).

43982279149 is a wasteful number, since it uses less digits than its factorization.

43982279149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41454670.

The product of its digits is 7838208, while the sum is 58.

The spelling of 43982279149 in words is "forty-three billion, nine hundred eighty-two million, two hundred seventy-nine thousand, one hundred forty-nine".