33279989 has 8 divisors (see below), whose sum is σ = 33707520. Its totient is φ = 32854896.

The previous prime is 33279971. The next prime is 33279997. The reversal of 33279989 is 98997233.

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

It is a cyclic number.

It is not a de Polignac number, because 33279989 - 2¹⁶ = 33214453 is a prime.

It is a super-2 number, since 2×33279989² = 2215115335680242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33279949) 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, 54524 + ... + 55130.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^33279989 is an apocalyptic number.

It is an amenable number.

33279989 is a deficient number, since it is larger than the sum of its proper divisors (427531).

33279989 is a wasteful number, since it uses less digits than its factorization.

33279989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219.

The product of its digits is 734832, while the sum is 50.

The square root of 33279989 is about 5768.8810873513. The cubic root of 33279989 is about 321.6580252480.

The spelling of 33279989 in words is "thirty-three million, two hundred seventy-nine thousand, nine hundred eighty-nine".