8158887 has 20 divisors (see below), whose sum is σ = 13297416. Its totient is φ = 4944240.

The previous prime is 8158879. The next prime is 8158919. The reversal of 8158887 is 7888518.

It is a happy number.

It is not a de Polignac number, because 8158887 - 2³ = 8158879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8158837) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3688 + ... + 5469.

Almost surely, 2^8158887 is an apocalyptic number.

8158887 is a deficient number, since it is larger than the sum of its proper divisors (5138529).

8158887 is a wasteful number, since it uses less digits than its factorization.

8158887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180 (or 9171 counting only the distinct ones).

The product of its digits is 143360, while the sum is 45.

The square root of 8158887 is about 2856.3765508070. The cubic root of 8158887 is about 201.3153881374.

It can be divided in two parts, 8158 and 887, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 8158887 in words is "eight million, one hundred fifty-eight thousand, eight hundred eighty-seven".