2009481 has 8 divisors (see below), whose sum is σ = 2724960. Its totient is φ = 1316832.

The previous prime is 2009467. The next prime is 2009489. The reversal of 2009481 is 1849002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2009481 - 2¹¹ = 2007433 is a prime.

It is a super-2 number, since 2×2009481² = 8076027778722, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2009489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5500 + ... + 5853.

It is an arithmetic number, because the mean of its divisors is an integer number (340620).

2^2009481 is an apocalyptic number.

It is an amenable number.

2009481 is a deficient number, since it is larger than the sum of its proper divisors (715479).

2009481 is a wasteful number, since it uses less digits than its factorization.

2009481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11415.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2009481 is about 1417.5616388715. The cubic root of 2009481 is about 126.1908797469.

The spelling of 2009481 in words is "two million, nine thousand, four hundred eighty-one".