33149439 has 16 divisors (see below), whose sum is σ = 51999840. Its totient is φ = 20799360.

The previous prime is 33149437. The next prime is 33149461. The reversal of 33149439 is 93494133.

It is not a de Polignac number, because 33149439 - 2¹ = 33149437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33149437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35652 + ... + 36569.

It is an arithmetic number, because the mean of its divisors is an integer number (3249990).

Almost surely, 2^33149439 is an apocalyptic number.

33149439 is a deficient number, since it is larger than the sum of its proper divisors (18850401).

33149439 is a wasteful number, since it uses less digits than its factorization.

33149439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72247 (or 72241 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 33149439 is about 5757.5549498029. The cubic root of 33149439 is about 321.2368764290.

It can be divided in two parts, 331 and 49439, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 33149439 in words is "thirty-three million, one hundred forty-nine thousand, four hundred thirty-nine".