22801409 has 4 divisors (see below), whose sum is σ = 22824516. Its totient is φ = 22778304.

The previous prime is 22801391. The next prime is 22801433. The reversal of 22801409 is 90410822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22061809 + 739600 = 4697^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 22801409 - 2²⁰ = 21752833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22801489) 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, 10004 + ... + 12069.

It is an arithmetic number, because the mean of its divisors is an integer number (5706129).

Almost surely, 2^22801409 is an apocalyptic number.

It is an amenable number.

22801409 is a deficient number, since it is larger than the sum of its proper divisors (23107).

22801409 is a wasteful number, since it uses less digits than its factorization.

22801409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23106.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 22801409 is about 4775.0820935351. The cubic root of 22801409 is about 283.5658288531.

The spelling of 22801409 in words is "twenty-two million, eight hundred one thousand, four hundred nine".