9133987 has 2 divisors, whose sum is σ = 9133988. Its totient is φ = 9133986.

The previous prime is 9133961. The next prime is 9133991. The reversal of 9133987 is 7893319.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9133987 - 2¹¹ = 9131939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9133907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4566993 + 4566994.

It is an arithmetic number, because the mean of its divisors is an integer number (4566994).

Almost surely, 2^9133987 is an apocalyptic number.

9133987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9133987 is an equidigital number, since it uses as much as digits as its factorization.

9133987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 9133987 is about 3022.2486661425. The cubic root of 9133987 is about 209.0355395406.

It can be divided in two parts, 913 and 3987, that added together give a square (4900 = 70²).

The spelling of 9133987 in words is "nine million, one hundred thirty-three thousand, nine hundred eighty-seven".