44168639 has 8 divisors (see below), whose sum is σ = 46133520. Its totient is φ = 42244416.

The previous prime is 44168627. The next prime is 44168651. The reversal of 44168639 is 93686144.

44168639 = T₁₁₉₄ + T₁₁₉₅ + ... + T₁₂₅₂.

It is an interprime number because it is at equal distance from previous prime (44168627) and next prime (44168651).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44168639 - 2⁴ = 44168623 is a prime.

It is a super-2 number, since 2×44168639² = 3901737342224642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44168596 and 44168605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44168539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7934 + ... + 12299.

It is an arithmetic number, because the mean of its divisors is an integer number (5766690).

Almost surely, 2^44168639 is an apocalyptic number.

44168639 is a deficient number, since it is larger than the sum of its proper divisors (1964881).

44168639 is a wasteful number, since it uses less digits than its factorization.

44168639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20329.

The product of its digits is 124416, while the sum is 41.

The square root of 44168639 is about 6645.9490669129. The cubic root of 44168639 is about 353.4852846102.

The spelling of 44168639 in words is "forty-four million, one hundred sixty-eight thousand, six hundred thirty-nine".