33928489 has 4 divisors (see below), whose sum is σ = 38775424. Its totient is φ = 29081556.

The previous prime is 33928421. The next prime is 33928511. The reversal of 33928489 is 98482933.

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.

It is not a de Polignac number, because 33928489 - 2²¹ = 31831337 is a prime.

It is a super-2 number, since 2×33928489² = 2302284731646242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33928789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2423457 + ... + 2423470.

It is an arithmetic number, because the mean of its divisors is an integer number (9693856).

Almost surely, 2^33928489 is an apocalyptic number.

It is an amenable number.

33928489 is a deficient number, since it is larger than the sum of its proper divisors (4846935).

33928489 is an equidigital number, since it uses as much as digits as its factorization.

33928489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846934.

The product of its digits is 373248, while the sum is 46.

The square root of 33928489 is about 5824.8166494749. The cubic root of 33928489 is about 323.7338953344.

It can be divided in two parts, 3392 and 8489, that added together give a square (11881 = 109²).

The spelling of 33928489 in words is "thirty-three million, nine hundred twenty-eight thousand, four hundred eighty-nine".