87938133 has 4 divisors (see below), whose sum is σ = 117250848. Its totient is φ = 58625420.

The previous prime is 87938129. The next prime is 87938171. The reversal of 87938133 is 33183978.

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 a cyclic number.

It is not a de Polignac number, because 87938133 - 2² = 87938129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87938033) 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, 14656353 + ... + 14656358.

It is an arithmetic number, because the mean of its divisors is an integer number (29312712).

Almost surely, 2^87938133 is an apocalyptic number.

It is an amenable number.

87938133 is a deficient number, since it is larger than the sum of its proper divisors (29312715).

87938133 is a wasteful number, since it uses less digits than its factorization.

87938133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29312714.

The product of its digits is 108864, while the sum is 42.

The square root of 87938133 is about 9377.5334176957. The cubic root of 87938133 is about 444.6917580892.

The spelling of 87938133 in words is "eighty-seven million, nine hundred thirty-eight thousand, one hundred thirty-three".