33997389 has 8 divisors (see below), whose sum is σ = 45381792. Its totient is φ = 22638960.

The previous prime is 33997387. The next prime is 33997409. The reversal of 33997389 is 98379933.

It is a happy number.

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

It is not a de Polignac number, because 33997389 - 2¹ = 33997387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33997387) 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, 3199 + ... + 8844.

It is an arithmetic number, because the mean of its divisors is an integer number (5672724).

Almost surely, 2^33997389 is an apocalyptic number.

It is an amenable number.

33997389 is a deficient number, since it is larger than the sum of its proper divisors (11384403).

33997389 is a wasteful number, since it uses less digits than its factorization.

33997389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12987.

The product of its digits is 1102248, while the sum is 51.

The square root of 33997389 is about 5830.7279991438. The cubic root of 33997389 is about 323.9528871445.

The spelling of 33997389 in words is "thirty-three million, nine hundred ninety-seven thousand, three hundred eighty-nine".