9238987 has 4 divisors (see below), whose sum is σ = 9395640. Its totient is φ = 9082336.

The previous prime is 9238969. The next prime is 9239033. The reversal of 9238987 is 7898329.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7898329 = 811 ⋅9739.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9238987 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9238967) 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, 78238 + ... + 78355.

It is an arithmetic number, because the mean of its divisors is an integer number (2348910).

Almost surely, 2^9238987 is an apocalyptic number.

9238987 is a deficient number, since it is larger than the sum of its proper divisors (156653).

9238987 is a wasteful number, since it uses less digits than its factorization.

9238987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156652.

The product of its digits is 217728, while the sum is 46.

The square root of 9238987 is about 3039.5701998802. The cubic root of 9238987 is about 209.8334809948.

The spelling of 9238987 in words is "nine million, two hundred thirty-eight thousand, nine hundred eighty-seven".