22197439 has 8 divisors (see below), whose sum is σ = 24257232. Its totient is φ = 20144640.

The previous prime is 22197431. The next prime is 22197443. The reversal of 22197439 is 93479122.

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 22197439 - 2³ = 22197431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22197398 and 22197407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22197431) 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, 6687 + ... + 9439.

It is an arithmetic number, because the mean of its divisors is an integer number (3032154).

Almost surely, 2^22197439 is an apocalyptic number.

22197439 is a deficient number, since it is larger than the sum of its proper divisors (2059793).

22197439 is a wasteful number, since it uses less digits than its factorization.

22197439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497.

The product of its digits is 27216, while the sum is 37.

The square root of 22197439 is about 4711.4158169281. The cubic root of 22197439 is about 281.0396679941.

The spelling of 22197439 in words is "twenty-two million, one hundred ninety-seven thousand, four hundred thirty-nine".