8542987 has 4 divisors (see below), whose sum is σ = 8622936. Its totient is φ = 8463040.

The previous prime is 8542979. The next prime is 8542999. The reversal of 8542987 is 7892458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8542987 - 2³ = 8542979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8542927) 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, 39814 + ... + 40027.

It is an arithmetic number, because the mean of its divisors is an integer number (2155734).

Almost surely, 2^8542987 is an apocalyptic number.

8542987 is a deficient number, since it is larger than the sum of its proper divisors (79949).

8542987 is a wasteful number, since it uses less digits than its factorization.

8542987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79948.

The product of its digits is 161280, while the sum is 43.

The square root of 8542987 is about 2922.8388597389. The cubic root of 8542987 is about 204.4262122626.

The spelling of 8542987 in words is "eight million, five hundred forty-two thousand, nine hundred eighty-seven".