22549939 has 4 divisors (see below), whose sum is σ = 23876424. Its totient is φ = 21223456.

The previous prime is 22549921. The next prime is 22549957. The reversal of 22549939 is 93994522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22549921) and next prime (22549957).

It is a cyclic number.

It is not a de Polignac number, because 22549939 - 2⁹ = 22549427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22549895 and 22549904.

It is not an unprimeable number, because it can be changed into a prime (22544939) 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, 663217 + ... + 663250.

It is an arithmetic number, because the mean of its divisors is an integer number (5969106).

Almost surely, 2^22549939 is an apocalyptic number.

22549939 is a deficient number, since it is larger than the sum of its proper divisors (1326485).

22549939 is a wasteful number, since it uses less digits than its factorization.

22549939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326484.

The product of its digits is 174960, while the sum is 43.

The square root of 22549939 is about 4748.6776053971. The cubic root of 22549939 is about 282.5195183215.

The spelling of 22549939 in words is "twenty-two million, five hundred forty-nine thousand, nine hundred thirty-nine".