33380449 has 4 divisors (see below), whose sum is σ = 33420436. Its totient is φ = 33340464.

The previous prime is 33380447. The next prime is 33380509. The reversal of 33380449 is 94408333.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17698849 + 15681600 = 4207^2 + 3960^2 .

It is a cyclic number.

It is not a de Polignac number, because 33380449 - 2¹ = 33380447 is a prime.

It is a super-2 number, since 2×33380449² = 2228508750883202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33380447) 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, 18714 + ... + 20419.

It is an arithmetic number, because the mean of its divisors is an integer number (8355109).

Almost surely, 2^33380449 is an apocalyptic number.

It is an amenable number.

33380449 is a deficient number, since it is larger than the sum of its proper divisors (39987).

33380449 is an equidigital number, since it uses as much as digits as its factorization.

33380449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39986.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 33380449 is about 5777.5815874810. The cubic root of 33380449 is about 321.9813557354.

The spelling of 33380449 in words is "thirty-three million, three hundred eighty thousand, four hundred forty-nine".