2081409 has 8 divisors (see below), whose sum is σ = 3027552. Its totient is φ = 1261440.

The previous prime is 2081407. The next prime is 2081423. The reversal of 2081409 is 9041802.

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

It is not a de Polignac number, because 2081409 - 2¹ = 2081407 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2081407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31504 + ... + 31569.

It is an arithmetic number, because the mean of its divisors is an integer number (378444).

2^2081409 is an apocalyptic number.

It is an amenable number.

2081409 is a deficient number, since it is larger than the sum of its proper divisors (946143).

2081409 is a wasteful number, since it uses less digits than its factorization.

2081409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63087.

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

The square root of 2081409 is about 1442.7089103489. The cubic root of 2081409 is about 127.6789030243.

The spelling of 2081409 in words is "two million, eighty-one thousand, four hundred nine".