22440407 has 8 divisors (see below), whose sum is σ = 25078032. Its totient is φ = 19902400.

The previous prime is 22440401. The next prime is 22440421. The reversal of 22440407 is 70404422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22440407 - 2¹⁶ = 22374871 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 (22440401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24428 + ... + 25329.

It is an arithmetic number, because the mean of its divisors is an integer number (3134754).

Almost surely, 2^22440407 is an apocalyptic number.

22440407 is a deficient number, since it is larger than the sum of its proper divisors (2637625).

22440407 is a wasteful number, since it uses less digits than its factorization.

22440407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49809.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 22440407 is about 4737.1306716197. The cubic root of 22440407 is about 282.0613475841.

Adding to 22440407 its reverse (70404422), we get a palindrome (92844829).

The spelling of 22440407 in words is "twenty-two million, four hundred forty thousand, four hundred seven".