44004138 has 8 divisors (see below), whose sum is σ = 88008288. Its totient is φ = 14668044.

The previous prime is 44004131. The next prime is 44004139. The reversal of 44004138 is 83140044.

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

44004138 is an admirable number.

It is a super-2 number, since 2×44004138² = 3872728322246088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44004131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667006 + ... + 3667017.

It is an arithmetic number, because the mean of its divisors is an integer number (11001036).

Almost surely, 2^44004138 is an apocalyptic number.

44004138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44004138 is a wasteful number, since it uses less digits than its factorization.

44004138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334028.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 44004138 is about 6633.5614868636. The cubic root of 44004138 is about 353.0459002928.

The spelling of 44004138 in words is "forty-four million, four thousand, one hundred thirty-eight".