44138007 has 32 divisors (see below), whose sum is σ = 69619200. Its totient is φ = 27558144.

The previous prime is 44137991. The next prime is 44138021. The reversal of 44138007 is 70083144.

It is not a de Polignac number, because 44138007 - 2⁴ = 44137991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44138057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49318 + ... + 50204.

It is an arithmetic number, because the mean of its divisors is an integer number (2175600).

Almost surely, 2^44138007 is an apocalyptic number.

44138007 is a deficient number, since it is larger than the sum of its proper divisors (25481193).

44138007 is a wasteful number, since it uses less digits than its factorization.

44138007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 44138007 is about 6643.6441054590. The cubic root of 44138007 is about 353.4035488991.

The spelling of 44138007 in words is "forty-four million, one hundred thirty-eight thousand, seven".