33162989 has 4 divisors (see below), whose sum is σ = 34059324. Its totient is φ = 32266656.

The previous prime is 33162967. The next prime is 33163003. The reversal of 33162989 is 98926133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30713764 + 2449225 = 5542^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 33162989 - 2²⁰ = 32114413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33162919) 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, 448112 + ... + 448185.

It is an arithmetic number, because the mean of its divisors is an integer number (8514831).

Almost surely, 2^33162989 is an apocalyptic number.

It is an amenable number.

33162989 is a deficient number, since it is larger than the sum of its proper divisors (896335).

33162989 is an equidigital number, since it uses as much as digits as its factorization.

33162989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896334.

The product of its digits is 69984, while the sum is 41.

The square root of 33162989 is about 5758.7315443594. The cubic root of 33162989 is about 321.2806395300.

The spelling of 33162989 in words is "thirty-three million, one hundred sixty-two thousand, nine hundred eighty-nine".