44387138 has 8 divisors (see below), whose sum is σ = 67672380. Its totient is φ = 21829680.

The previous prime is 44387117. The next prime is 44387143. The reversal of 44387138 is 83178344.

It can be written as a sum of positive squares in 2 ways, for example, as 26553409 + 17833729 = 5153^2 + 4223^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181793 + ... + 182036.

Almost surely, 2^44387138 is an apocalyptic number.

44387138 is a deficient number, since it is larger than the sum of its proper divisors (23285242).

44387138 is a wasteful number, since it uses less digits than its factorization.

44387138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363892.

The product of its digits is 64512, while the sum is 38.

The square root of 44387138 is about 6662.3672969899. The cubic root of 44387138 is about 354.0672146195.

The spelling of 44387138 in words is "forty-four million, three hundred eighty-seven thousand, one hundred thirty-eight".