2007999 has 12 divisors (see below), whose sum is σ = 3314896. Its totient is φ = 1147392.

The previous prime is 2007979. The next prime is 2008003. The reversal of 2007999 is 9997002.

It is not a de Polignac number, because 2007999 - 2⁷ = 2007871 is a prime.

It is a Duffinian number.

2007999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2007919) 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, 15874 + ... + 15999.

2^2007999 is an apocalyptic number.

2007999 is a deficient number, since it is larger than the sum of its proper divisors (1306897).

2007999 is a wasteful number, since it uses less digits than its factorization.

2007999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31886 (or 31883 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 2007999 is about 1417.0388138650. The cubic root of 2007999 is about 126.1598500304.

The spelling of 2007999 in words is "two million, seven thousand, nine hundred ninety-nine".