44028009 has 16 divisors (see below), whose sum is σ = 65903040. Its totient is φ = 29047680.

The previous prime is 44027989. The next prime is 44028013. The reversal of 44028009 is 90082044.

It is not a de Polignac number, because 44028009 - 2²⁴ = 27250793 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (44028109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5787 + ... + 11024.

It is an arithmetic number, because the mean of its divisors is an integer number (4118940).

Almost surely, 2^44028009 is an apocalyptic number.

It is an amenable number.

44028009 is a deficient number, since it is larger than the sum of its proper divisors (21875031).

44028009 is a wasteful number, since it uses less digits than its factorization.

44028009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16917 (or 16911 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 44028009 is about 6635.3605026404. The cubic root of 44028009 is about 353.1097278904.

The spelling of 44028009 in words is "forty-four million, twenty-eight thousand, nine".