8457987 has 4 divisors (see below), whose sum is σ = 11277320. Its totient is φ = 5638656.

The previous prime is 8457973. The next prime is 8457989. The reversal of 8457987 is 7897548.

8457987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8457987 - 2⁶ = 8457923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8457989) 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, 1409662 + ... + 1409667.

It is an arithmetic number, because the mean of its divisors is an integer number (2819330).

Almost surely, 2^8457987 is an apocalyptic number.

8457987 is a deficient number, since it is larger than the sum of its proper divisors (2819333).

8457987 is a wasteful number, since it uses less digits than its factorization.

8457987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819332.

The product of its digits is 564480, while the sum is 48.

The square root of 8457987 is about 2908.2618520346. The cubic root of 8457987 is about 203.7459592459.

It can be divided in two parts, 84579 and 87, that added together give a triangular number (84666 = T₄₁₁).

The spelling of 8457987 in words is "eight million, four hundred fifty-seven thousand, nine hundred eighty-seven".