33987297 has 4 divisors (see below), whose sum is σ = 45316400. Its totient is φ = 22658196.

The previous prime is 33987281. The next prime is 33987311. The reversal of 33987297 is 79278933.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79278933 = 3 ⋅26426311.

It is not a de Polignac number, because 33987297 - 2⁴ = 33987281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33987277) 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, 5664547 + ... + 5664552.

It is an arithmetic number, because the mean of its divisors is an integer number (11329100).

Almost surely, 2^33987297 is an apocalyptic number.

It is an amenable number.

33987297 is a deficient number, since it is larger than the sum of its proper divisors (11329103).

33987297 is a wasteful number, since it uses less digits than its factorization.

33987297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11329102.

The product of its digits is 571536, while the sum is 48.

The square root of 33987297 is about 5829.8625198198. The cubic root of 33987297 is about 323.9208292308.

The spelling of 33987297 in words is "thirty-three million, nine hundred eighty-seven thousand, two hundred ninety-seven".