44549278489 has 3 divisors (see below), whose sum is σ = 44549489557. Its totient is φ = 44549067422.

The previous prime is 44549278451. The next prime is 44549278507. The reversal of 44549278489 is 98487294544.

The square root of 44549278489 is 211067.

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 is not a de Polignac number, because 44549278489 - 2⁹ = 44549277977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44549278489.

It is not an unprimeable number, because it can be changed into a prime (44549278409) 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 2 ways as a sum of consecutive naturals, for example, 105534 + ... + 316600.

Almost surely, 2^44549278489 is an apocalyptic number.

44549278489 is the 211067-th square number.

44549278489 is the 105534-th centered octagonal number.

It is an amenable number.

44549278489 is a deficient number, since it is larger than the sum of its proper divisors (211068).

44549278489 is an frugal number, since it uses more digits than its factorization.

44549278489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422134 (or 211067 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 64.

Multiplying 44549278489 by its sum of digits (64), we get a square (2851153823296 = 1688536²).

The spelling of 44549278489 in words is "forty-four billion, five hundred forty-nine million, two hundred seventy-eight thousand, four hundred eighty-nine".