44044157689 has 15 divisors (see below), whose sum is σ = 51393792773. Its totient is φ = 37743320748.

The previous prime is 44044157683. The next prime is 44044157699. The reversal of 44044157689 is 98675144044.

It is a happy number.

The square root of 44044157689 is 209867.

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

It is not a de Polignac number, because 44044157689 - 2¹³ = 44044149497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44044157683) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 10281342 + ... + 10285624.

Almost surely, 2^44044157689 is an apocalyptic number.

44044157689 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

44044157689 is the 209867-th square number.

44044157689 is the 104934-th centered octagonal number.

It is an amenable number.

44044157689 is a deficient number, since it is larger than the sum of its proper divisors (7349635084).

44044157689 is an frugal number, since it uses more digits than its factorization.

44044157689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 44044157689 in words is "forty-four billion, forty-four million, one hundred fifty-seven thousand, six hundred eighty-nine".