2009930 has 16 divisors (see below), whose sum is σ = 3896424. Its totient is φ = 742080.

The previous prime is 2009923. The next prime is 2009957. The reversal of 2009930 is 399002.

It can be written as a sum of positive squares in 4 ways, for example, as 942841 + 1067089 = 971^2 + 1033^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2009896 and 2009905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7601 + ... + 7860.

2^2009930 is an apocalyptic number.

2009930 is a deficient number, since it is larger than the sum of its proper divisors (1886494).

2009930 is a wasteful number, since it uses less digits than its factorization.

2009930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15481.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 2009930 is about 1417.7200005643. The cubic root of 2009930 is about 126.2002777765.

The spelling of 2009930 in words is "two million, nine thousand, nine hundred thirty".