2411809 has 3 divisors (see below), whose sum is σ = 2413363. Its totient is φ = 2410256.

The previous prime is 2411797. The next prime is 2411821. The reversal of 2411809 is 9081142.

It is a happy number.

The square root of 2411809 is 1553.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (2411797) and next prime (2411821).

It can be written as a sum of positive squares in only one way, i.e., 245025 + 2166784 = 495^2 + 1472^2 .

It is not a de Polignac number, because 2411809 - 2⁵ = 2411777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2411869) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 777 + ... + 2329.

2^2411809 is an apocalyptic number.

2411809 is the 1553-rd square number.

2411809 is the 777-th centered octagonal number.

It is an amenable number.

2411809 is a deficient number, since it is larger than the sum of its proper divisors (1554).

2411809 is an frugal number, since it uses more digits than its factorization.

2411809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The cubic root of 2411809 is about 134.1058234384.

Multiplying 2411809 by its sum of digits (25), we get a square (60295225 = 7765²).

Multiplying 2411809 by its product of nonzero digits (576), we get a square (1389201984 = 37272²).

The spelling of 2411809 in words is "two million, four hundred eleven thousand, eight hundred nine".