22116439 has 4 divisors (see below), whose sum is σ = 23417424. Its totient is φ = 20815456.

The previous prime is 22116431. The next prime is 22116443. The reversal of 22116439 is 93461122.

22116439 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93461122 = 2 ⋅46730561.

It is a cyclic number.

It is not a de Polignac number, because 22116439 - 2³ = 22116431 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 (22116431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650467 + ... + 650500.

It is an arithmetic number, because the mean of its divisors is an integer number (5854356).

Almost surely, 2^22116439 is an apocalyptic number.

22116439 is a deficient number, since it is larger than the sum of its proper divisors (1300985).

22116439 is a wasteful number, since it uses less digits than its factorization.

22116439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300984.

The product of its digits is 2592, while the sum is 28.

The square root of 22116439 is about 4702.8118184763. The cubic root of 22116439 is about 280.6974069074.

The spelling of 22116439 in words is "twenty-two million, one hundred sixteen thousand, four hundred thirty-nine".