33222409 has 4 divisors (see below), whose sum is σ = 36242640. Its totient is φ = 30202180.

The previous prime is 33222407. The next prime is 33222433. The reversal of 33222409 is 90422233.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90422233 = 11 ⋅8220203.

It is a cyclic number.

It is not a de Polignac number, because 33222409 - 2¹ = 33222407 is a prime.

It is a super-2 number, since 2×33222409² = 2207456919526562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33222407) 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, 1510099 + ... + 1510120.

It is an arithmetic number, because the mean of its divisors is an integer number (9060660).

Almost surely, 2^33222409 is an apocalyptic number.

It is an amenable number.

33222409 is a deficient number, since it is larger than the sum of its proper divisors (3020231).

33222409 is a wasteful number, since it uses less digits than its factorization.

33222409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020230.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 33222409 is about 5763.8883576974. Note that the first 3 decimals coincide. The cubic root of 33222409 is about 321.4724105943.

The spelling of 33222409 in words is "thirty-three million, two hundred twenty-two thousand, four hundred nine".