33409129 has 8 divisors (see below), whose sum is σ = 36210440. Its totient is φ = 30640896.

The previous prime is 33409127. The next prime is 33409141. The reversal of 33409129 is 92190433.

It can be written as a sum of positive squares in 4 ways, for example, as 729 + 33408400 = 27^2 + 5780^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33409129 - 2¹ = 33409127 is a prime.

It is a super-2 number, since 2×33409129² = 2232339801077282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33409129.

It is not an unprimeable number, because it can be changed into a prime (33409127) 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, 6144 + ... + 10225.

It is an arithmetic number, because the mean of its divisors is an integer number (4526305).

Almost surely, 2^33409129 is an apocalyptic number.

It is an amenable number.

33409129 is a deficient number, since it is larger than the sum of its proper divisors (2801311).

33409129 is a wasteful number, since it uses less digits than its factorization.

33409129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16539.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 33409129 is about 5780.0630619397. The cubic root of 33409129 is about 322.0735432496.

The spelling of 33409129 in words is "thirty-three million, four hundred nine thousand, one hundred twenty-nine".