44009987 has 16 divisors (see below), whose sum is σ = 52992000. Its totient is φ = 36497160.

The previous prime is 44009963. The next prime is 44010073. The reversal of 44009987 is 78990044.

It is not a de Polignac number, because 44009987 - 2¹⁶ = 43944451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44009387) 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, 8564 + ... + 12702.

It is an arithmetic number, because the mean of its divisors is an integer number (3312000).

Almost surely, 2^44009987 is an apocalyptic number.

44009987 is a deficient number, since it is larger than the sum of its proper divisors (8982013).

44009987 is an equidigital number, since it uses as much as digits as its factorization.

44009987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191 (or 4177 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 44009987 is about 6634.0023364482. The cubic root of 44009987 is about 353.0615418065.

The spelling of 44009987 in words is "forty-four million, nine thousand, nine hundred eighty-seven".