22409413 has 4 divisors (see below), whose sum is σ = 24133228. Its totient is φ = 20685600.

The previous prime is 22409393. The next prime is 22409437. The reversal of 22409413 is 31490422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31490422 = 2 ⋅15745211.

It can be written as a sum of positive squares in 2 ways, for example, as 7409284 + 15000129 = 2722^2 + 3873^2 .

It is not a de Polignac number, because 22409413 - 2⁹ = 22408901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22409473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861888 + ... + 861913.

It is an arithmetic number, because the mean of its divisors is an integer number (6033307).

Almost surely, 2^22409413 is an apocalyptic number.

It is an amenable number.

22409413 is a deficient number, since it is larger than the sum of its proper divisors (1723815).

22409413 is a wasteful number, since it uses less digits than its factorization.

22409413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723814.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22409413 is about 4733.8581516560. The cubic root of 22409413 is about 281.9314295999.

Adding to 22409413 its reverse (31490422), we get a palindrome (53899835).

It can be divided in two parts, 22409 and 413, that added together give a palindrome (22822).

The spelling of 22409413 in words is "twenty-two million, four hundred nine thousand, four hundred thirteen".