22017949 has 8 divisors (see below), whose sum is σ = 22913280. Its totient is φ = 21140496.

The previous prime is 22017901. The next prime is 22017953. The reversal of 22017949 is 94971022.

It is a happy number.

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 22017949 - 2¹⁷ = 21886877 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 (22017349) 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, 1929 + ... + 6910.

It is an arithmetic number, because the mean of its divisors is an integer number (2864160).

Almost surely, 2^22017949 is an apocalyptic number.

It is an amenable number.

22017949 is a deficient number, since it is larger than the sum of its proper divisors (895331).

22017949 is an equidigital number, since it uses as much as digits as its factorization.

22017949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8939.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 22017949 is about 4692.3287395493. The cubic root of 22017949 is about 280.2801150845.

The spelling of 22017949 in words is "twenty-two million, seventeen thousand, nine hundred forty-nine".