22086439 has 4 divisors (see below), whose sum is σ = 22109256. Its totient is φ = 22063624.

The previous prime is 22086431. The next prime is 22086457. The reversal of 22086439 is 93468022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93468022 = 2 ⋅46734011.

It is a cyclic number.

It is not a de Polignac number, because 22086439 - 2³ = 22086431 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 (22086431) 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, 9889 + ... + 11914.

It is an arithmetic number, because the mean of its divisors is an integer number (5527314).

Almost surely, 2^22086439 is an apocalyptic number.

22086439 is a deficient number, since it is larger than the sum of its proper divisors (22817).

22086439 is a wasteful number, since it uses less digits than its factorization.

22086439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22816.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 22086439 is about 4699.6211549443. The cubic root of 22086439 is about 280.5704314840.

The spelling of 22086439 in words is "twenty-two million, eighty-six thousand, four hundred thirty-nine".