8144857 has 4 divisors (see below), whose sum is σ = 9308416. Its totient is φ = 6981300.

The previous prime is 8144849. The next prime is 8144861. The reversal of 8144857 is 7584418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7584418 = 2 ⋅3792209.

It is a cyclic number.

It is not a de Polignac number, because 8144857 - 2³ = 8144849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8144827) 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, 581769 + ... + 581782.

It is an arithmetic number, because the mean of its divisors is an integer number (2327104).

Almost surely, 2^8144857 is an apocalyptic number.

It is an amenable number.

8144857 is a deficient number, since it is larger than the sum of its proper divisors (1163559).

8144857 is a wasteful number, since it uses less digits than its factorization.

8144857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163558.

The product of its digits is 35840, while the sum is 37.

The square root of 8144857 is about 2853.9195854123. The cubic root of 8144857 is about 201.1999281316.

It can be divided in two parts, 814 and 4857, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 8144857 in words is "eight million, one hundred forty-four thousand, eight hundred fifty-seven".