22387969 has 4 divisors (see below), whose sum is σ = 22401796. Its totient is φ = 22374144.

The previous prime is 22387961. The next prime is 22387979. The reversal of 22387969 is 96978322.

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 9535744 + 12852225 = 3088^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 22387969 - 2³ = 22387961 is a prime.

It is a super-2 number, since 2×22387969² = 1002442311889922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22387961) 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, 4104 + ... + 7849.

It is an arithmetic number, because the mean of its divisors is an integer number (5600449).

Almost surely, 2^22387969 is an apocalyptic number.

It is an amenable number.

22387969 is a deficient number, since it is larger than the sum of its proper divisors (13827).

22387969 is a wasteful number, since it uses less digits than its factorization.

22387969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13826.

The product of its digits is 326592, while the sum is 46.

The square root of 22387969 is about 4731.5926494152. The cubic root of 22387969 is about 281.8414723570.

The spelling of 22387969 in words is "twenty-two million, three hundred eighty-seven thousand, nine hundred sixty-nine".