43997676829 has 16 divisors (see below), whose sum is σ = 47752404336. Its totient is φ = 40373862400.

The previous prime is 43997676769. The next prime is 43997676871. The reversal of 43997676829 is 92867679934.

It can be written as a sum of positive squares in 8 ways, for example, as 13259522500 + 30738154329 = 115150^2 + 175323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43997676829 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 (43997676329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1121709 + ... + 1160269.

It is an arithmetic number, because the mean of its divisors is an integer number (2984525271).

Almost surely, 2^43997676829 is an apocalyptic number.

It is an amenable number.

43997676829 is a deficient number, since it is larger than the sum of its proper divisors (3754727507).

43997676829 is a wasteful number, since it uses less digits than its factorization.

43997676829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40256.

The product of its digits is 246903552, while the sum is 70.

The spelling of 43997676829 in words is "forty-three billion, nine hundred ninety-seven million, six hundred seventy-six thousand, eight hundred twenty-nine".