2030409 has 6 divisors (see below), whose sum is σ = 2932826. Its totient is φ = 1353600.

The previous prime is 2030393. The next prime is 2030411. The reversal of 2030409 is 9040302.

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 921600 = 1053^2 + 960^2 .

It is not a de Polignac number, because 2030409 - 2⁴ = 2030393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2030391 and 2030400.

It is not an unprimeable number, because it can be changed into a prime (2030419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112792 + ... + 112809.

2^2030409 is an apocalyptic number.

It is an amenable number.

2030409 is a deficient number, since it is larger than the sum of its proper divisors (902417).

2030409 is a wasteful number, since it uses less digits than its factorization.

2030409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225607 (or 225604 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2030409 is about 1424.9242085108. The cubic root of 2030409 is about 126.6274447661.

Adding to 2030409 its product of nonzero digits (216), we get a square (2030625 = 1425²).

The spelling of 2030409 in words is "two million, thirty thousand, four hundred nine".