44681387 has 4 divisors (see below), whose sum is σ = 46624080. Its totient is φ = 42738696.

The previous prime is 44681303. The next prime is 44681393. The reversal of 44681387 is 78318644.

44681387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44681387 - 2²⁰ = 43632811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44681887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971312 + ... + 971357.

It is an arithmetic number, because the mean of its divisors is an integer number (11656020).

Almost surely, 2^44681387 is an apocalyptic number.

44681387 is a deficient number, since it is larger than the sum of its proper divisors (1942693).

44681387 is a wasteful number, since it uses less digits than its factorization.

44681387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942692.

The product of its digits is 129024, while the sum is 41.

The square root of 44681387 is about 6684.4137364469. The cubic root of 44681387 is about 354.8478803386.

The spelling of 44681387 in words is "forty-four million, six hundred eighty-one thousand, three hundred eighty-seven".