33921189 has 12 divisors (see below), whose sum is σ = 49128300. Its totient is φ = 22553664.

The previous prime is 33921179. The next prime is 33921197. The reversal of 33921189 is 98112933.

It can be written as a sum of positive squares in 2 ways, for example, as 13264164 + 20657025 = 3642^2 + 4545^2 .

It is not a de Polignac number, because 33921189 - 2⁵ = 33921157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33921149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1344 + ... + 8345.

It is an arithmetic number, because the mean of its divisors is an integer number (4094025).

Almost surely, 2^33921189 is an apocalyptic number.

It is an amenable number.

33921189 is a deficient number, since it is larger than the sum of its proper divisors (15207111).

33921189 is a wasteful number, since it uses less digits than its factorization.

33921189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084 (or 10081 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 33921189 is about 5824.1899865990. The cubic root of 33921189 is about 323.7106756448.

It can be divided in two parts, 339 and 21189, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 33921189 in words is "thirty-three million, nine hundred twenty-one thousand, one hundred eighty-nine".