22159709 has 16 divisors (see below), whose sum is σ = 26182464. Its totient is φ = 18489600.

The previous prime is 22159691. The next prime is 22159759. The reversal of 22159709 is 90795122.

It is a cyclic number.

It is not a de Polignac number, because 22159709 - 2¹⁶ = 22094173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22159759) 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 15 ways as a sum of consecutive naturals, for example, 34142 + ... + 34784.

It is an arithmetic number, because the mean of its divisors is an integer number (1636404).

Almost surely, 2^22159709 is an apocalyptic number.

It is an amenable number.

22159709 is a deficient number, since it is larger than the sum of its proper divisors (4022755).

22159709 is a wasteful number, since it uses less digits than its factorization.

22159709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 22159709 is about 4707.4100097612. The cubic root of 22159709 is about 280.8803457080.

The spelling of 22159709 in words is "twenty-two million, one hundred fifty-nine thousand, seven hundred nine".