8457849 has 12 divisors (see below), whose sum is σ = 12515412. Its totient is φ = 5500800.

The previous prime is 8457847. The next prime is 8457851. The reversal of 8457849 is 9487548.

It is an interprime number because it is at equal distance from previous prime (8457847) and next prime (8457851).

It can be written as a sum of positive squares in 2 ways, for example, as 1863225 + 6594624 = 1365^2 + 2568^2 .

It is not a de Polignac number, because 8457849 - 2¹ = 8457847 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8457847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11092 + ... + 11829.

It is an arithmetic number, because the mean of its divisors is an integer number (1042951).

Almost surely, 2^8457849 is an apocalyptic number.

It is an amenable number.

8457849 is a deficient number, since it is larger than the sum of its proper divisors (4057563).

8457849 is a wasteful number, since it uses less digits than its factorization.

8457849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22968 (or 22965 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 8457849 is about 2908.2381264264. The cubic root of 8457849 is about 203.7448511377.

The spelling of 8457849 in words is "eight million, four hundred fifty-seven thousand, eight hundred forty-nine".