22219969 has 4 divisors (see below), whose sum is σ = 23527044. Its totient is φ = 20912896.

The previous prime is 22219961. The next prime is 22219973. The reversal of 22219969 is 96991222.

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 18378369 + 3841600 = 4287^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 22219969 - 2³ = 22219961 is a prime.

It is a super-2 number, since 2×22219969² = 987454044721922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22219961) 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, 653512 + ... + 653545.

It is an arithmetic number, because the mean of its divisors is an integer number (5881761).

Almost surely, 2^22219969 is an apocalyptic number.

It is an amenable number.

22219969 is a deficient number, since it is larger than the sum of its proper divisors (1307075).

22219969 is a wasteful number, since it uses less digits than its factorization.

22219969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307074.

The product of its digits is 34992, while the sum is 40.

The square root of 22219969 is about 4713.8062115450. The cubic root of 22219969 is about 281.1347192400.

The spelling of 22219969 in words is "twenty-two million, two hundred nineteen thousand, nine hundred sixty-nine".