44138807 has 4 divisors (see below), whose sum is σ = 44862456. Its totient is φ = 43415160.

The previous prime is 44138803. The next prime is 44138833. The reversal of 44138807 is 70883144.

It is a happy number.

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 44138807 - 2² = 44138803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44138803) by changing a digit.

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, 361733 + ... + 361854.

It is an arithmetic number, because the mean of its divisors is an integer number (11215614).

Almost surely, 2^44138807 is an apocalyptic number.

44138807 is a deficient number, since it is larger than the sum of its proper divisors (723649).

44138807 is an equidigital number, since it uses as much as digits as its factorization.

44138807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723648.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 44138807 is about 6643.7043131073. The cubic root of 44138807 is about 353.4056840290.

The spelling of 44138807 in words is "forty-four million, one hundred thirty-eight thousand, eight hundred seven".