22239191 has 8 divisors (see below), whose sum is σ = 24163440. Its totient is φ = 20345472.

The previous prime is 22239187. The next prime is 22239199. The reversal of 22239191 is 19193222.

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 22239191 - 2² = 22239187 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 (22239199) 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, 6101 + ... + 9038.

It is an arithmetic number, because the mean of its divisors is an integer number (3020430).

Almost surely, 2^22239191 is an apocalyptic number.

22239191 is a deficient number, since it is larger than the sum of its proper divisors (1924249).

22239191 is a wasteful number, since it uses less digits than its factorization.

22239191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15265.

The product of its digits is 1944, while the sum is 29.

The square root of 22239191 is about 4715.8446751351. The cubic root of 22239191 is about 281.2157636680.

The spelling of 22239191 in words is "twenty-two million, two hundred thirty-nine thousand, one hundred ninety-one".