2009140 has 48 divisors (see below), whose sum is σ = 4902912. Its totient is φ = 677376.

The previous prime is 2009113. The next prime is 2009167. The reversal of 2009140 is 419002.

It is an interprime number because it is at equal distance from previous prime (2009113) and next prime (2009167).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15757 + ... + 15883.

It is an arithmetic number, because the mean of its divisors is an integer number (102144).

2^2009140 is an apocalyptic number.

2009140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2009140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451456).

2009140 is an abundant number, since it is smaller than the sum of its proper divisors (2893772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009140 is a wasteful number, since it uses less digits than its factorization.

2009140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2009140 is about 1417.4413568116. The cubic root of 2009140 is about 126.1837413325.

The spelling of 2009140 in words is "two million, nine thousand, one hundred forty".