44989987 has 12 divisors (see below), whose sum is σ = 52449120. Its totient is φ = 38479056.

The previous prime is 44989963. The next prime is 44990009. The reversal of 44989987 is 78998944.

It is not a de Polignac number, because 44989987 - 2¹¹ = 44987939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44989907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34593 + ... + 35869.

It is an arithmetic number, because the mean of its divisors is an integer number (4370760).

Almost surely, 2^44989987 is an apocalyptic number.

44989987 is a deficient number, since it is larger than the sum of its proper divisors (7459133).

44989987 is a wasteful number, since it uses less digits than its factorization.

44989987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010 (or 2003 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 44989987 is about 6707.4575660231. The cubic root of 44989987 is about 355.6629468827.

The spelling of 44989987 in words is "forty-four million, nine hundred eighty-nine thousand, nine hundred eighty-seven".