2043220409 has 4 divisors (see below), whose sum is σ = 2073716304. Its totient is φ = 2012724516.

The previous prime is 2043220397. The next prime is 2043220427. The reversal of 2043220409 is 9040223402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043220409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043220469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15247847 + ... + 15247980.

It is an arithmetic number, because the mean of its divisors is an integer number (518429076).

Almost surely, 2^2043220409 is an apocalyptic number.

It is an amenable number.

2043220409 is a deficient number, since it is larger than the sum of its proper divisors (30495895).

2043220409 is an equidigital number, since it uses as much as digits as its factorization.

2043220409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30495894.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2043220409 is about 45201.9956307241. The cubic root of 2043220409 is about 1268.9321647924.

The spelling of 2043220409 in words is "two billion, forty-three million, two hundred twenty thousand, four hundred nine".