33440461 has 4 divisors (see below), whose sum is σ = 34256124. Its totient is φ = 32624800.

The previous prime is 33440447. The next prime is 33440483. The reversal of 33440461 is 16404433.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16404433 = 317 ⋅51749.

It can be written as a sum of positive squares in 2 ways, for example, as 13912900 + 19527561 = 3730^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 33440461 - 2⁷ = 33440333 is a prime.

It is a super-2 number, since 2×33440461² = 2236528863785042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33440401) 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, 407770 + ... + 407851.

It is an arithmetic number, because the mean of its divisors is an integer number (8564031).

Almost surely, 2^33440461 is an apocalyptic number.

It is an amenable number.

33440461 is a deficient number, since it is larger than the sum of its proper divisors (815663).

33440461 is an equidigital number, since it uses as much as digits as its factorization.

33440461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815662.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 33440461 is about 5782.7727778290. The cubic root of 33440461 is about 322.1741949337.

Adding to 33440461 its reverse (16404433), we get a palindrome (49844894).

The spelling of 33440461 in words is "thirty-three million, four hundred forty thousand, four hundred sixty-one".