44387952689 has 4 divisors (see below), whose sum is σ = 45587627124. Its totient is φ = 43188278256.

The previous prime is 44387952643. The next prime is 44387952709. The reversal of 44387952689 is 98625978344.

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 34543939600 + 9844013089 = 185860^2 + 99217^2 .

It is a cyclic number.

It is not a de Polignac number, because 44387952689 - 2³² = 40092985393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44387552689) 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 3 ways as a sum of consecutive naturals, for example, 599837162 + ... + 599837235.

It is an arithmetic number, because the mean of its divisors is an integer number (11396906781).

Almost surely, 2^44387952689 is an apocalyptic number.

It is an amenable number.

44387952689 is a deficient number, since it is larger than the sum of its proper divisors (1199674435).

44387952689 is a wasteful number, since it uses less digits than its factorization.

44387952689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199674434.

The product of its digits is 104509440, while the sum is 65.

The spelling of 44387952689 in words is "forty-four billion, three hundred eighty-seven million, nine hundred fifty-two thousand, six hundred eighty-nine".