22100389 has 4 divisors (see below), whose sum is σ = 22116256. Its totient is φ = 22084524.

The previous prime is 22100347. The next prime is 22100431. The reversal of 22100389 is 98300122.

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 an interprime number because it is at equal distance from previous prime (22100347) and next prime (22100431).

It is a cyclic number.

It is not a de Polignac number, because 22100389 - 2⁷ = 22100261 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 (22100339) 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, 5619 + ... + 8704.

It is an arithmetic number, because the mean of its divisors is an integer number (5529064).

Almost surely, 2^22100389 is an apocalyptic number.

It is an amenable number.

22100389 is a deficient number, since it is larger than the sum of its proper divisors (15867).

22100389 is a wasteful number, since it uses less digits than its factorization.

22100389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15866.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 22100389 is about 4701.1050828502. The cubic root of 22100389 is about 280.6294893487.

The spelling of 22100389 in words is "twenty-two million, one hundred thousand, three hundred eighty-nine".