22147139 has 8 divisors (see below), whose sum is σ = 25616640. Its totient is φ = 18754056.

The previous prime is 22147129. The next prime is 22147157. The reversal of 22147139 is 93174122.

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 22147139 - 2¹⁶ = 22081603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22147109) 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 7 ways as a sum of consecutive naturals, for example, 18479 + ... + 19640.

It is an arithmetic number, because the mean of its divisors is an integer number (3202080).

Almost surely, 2^22147139 is an apocalyptic number.

22147139 is a deficient number, since it is larger than the sum of its proper divisors (3469501).

22147139 is an equidigital number, since it uses as much as digits as its factorization.

22147139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38209.

The product of its digits is 3024, while the sum is 29.

The square root of 22147139 is about 4706.0746912900. The cubic root of 22147139 is about 280.8272262719.

The spelling of 22147139 in words is "twenty-two million, one hundred forty-seven thousand, one hundred thirty-nine".