33144429 has 4 divisors (see below), whose sum is σ = 44192576. Its totient is φ = 22096284.

The previous prime is 33144413. The next prime is 33144481. The reversal of 33144429 is 92444133.

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: 92444133 = 3 ⋅30814711.

It is not a de Polignac number, because 33144429 - 2⁴ = 33144413 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 33144396 and 33144405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33144499) 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, 5524069 + ... + 5524074.

It is an arithmetic number, because the mean of its divisors is an integer number (11048144).

Almost surely, 2^33144429 is an apocalyptic number.

It is an amenable number.

33144429 is a deficient number, since it is larger than the sum of its proper divisors (11048147).

33144429 is a wasteful number, since it uses less digits than its factorization.

33144429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11048146.

The product of its digits is 10368, while the sum is 30.

The square root of 33144429 is about 5757.1198528431. The cubic root of 33144429 is about 321.2206923659.

The spelling of 33144429 in words is "thirty-three million, one hundred forty-four thousand, four hundred twenty-nine".