22135439 has 8 divisors (see below), whose sum is σ = 22997520. Its totient is φ = 21280000.

The previous prime is 22135433. The next prime is 22135441. The reversal of 22135439 is 93453122.

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 22135439 - 2⁴ = 22135423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22135433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5759 + ... + 8799.

It is an arithmetic number, because the mean of its divisors is an integer number (2874690).

Almost surely, 2^22135439 is an apocalyptic number.

22135439 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

22135439 is a deficient number, since it is larger than the sum of its proper divisors (862081).

22135439 is a wasteful number, since it uses less digits than its factorization.

22135439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321.

The product of its digits is 6480, while the sum is 29.

The square root of 22135439 is about 4704.8314528791. The cubic root of 22135439 is about 280.7777652962. Note that the first 4 decimals are identical.

The spelling of 22135439 in words is "twenty-two million, one hundred thirty-five thousand, four hundred thirty-nine".