22040401 has 4 divisors (see below), whose sum is σ = 22306032. Its totient is φ = 21774772.

The previous prime is 22040393. The next prime is 22040429. The reversal of 22040401 is 10404022.

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 not a de Polignac number, because 22040401 - 2³ = 22040393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22040441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132691 + ... + 132856.

It is an arithmetic number, because the mean of its divisors is an integer number (5576508).

Almost surely, 2^22040401 is an apocalyptic number.

It is an amenable number.

22040401 is a deficient number, since it is larger than the sum of its proper divisors (265631).

22040401 is an equidigital number, since it uses as much as digits as its factorization.

22040401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265630.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22040401 is about 4694.7205454638. The cubic root of 22040401 is about 280.3753511937.

Adding to 22040401 its reverse (10404022), we get a palindrome (32444423).

The spelling of 22040401 in words is "twenty-two million, forty thousand, four hundred one".