44172689929 has 3 divisors (see below), whose sum is σ = 44172900103. Its totient is φ = 44172479756.

The previous prime is 44172689927. The next prime is 44172689963. The reversal of 44172689929 is 92998627144.

The square root of 44172689929 is 210173.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 33242405625 + 10930284304 = 182325^2 + 104548^2 .

It is not a de Polignac number, because 44172689929 - 2¹ = 44172689927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44172689927) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 105087 + ... + 315259.

Almost surely, 2^44172689929 is an apocalyptic number.

44172689929 is the 210173-rd square number.

44172689929 is the 105087-th centered octagonal number.

It is an amenable number.

44172689929 is a deficient number, since it is larger than the sum of its proper divisors (210174).

44172689929 is an frugal number, since it uses more digits than its factorization.

44172689929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420346 (or 210173 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The spelling of 44172689929 in words is "forty-four billion, one hundred seventy-two million, six hundred eighty-nine thousand, nine hundred twenty-nine".