8499851 has 2 divisors, whose sum is σ = 8499852. Its totient is φ = 8499850.

The previous prime is 8499839. The next prime is 8499877. The reversal of 8499851 is 1589948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8499851 - 2¹⁴ = 8483467 is a prime.

It is not a weakly prime, because it can be changed into another prime (8429851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4249925 + 4249926.

It is an arithmetic number, because the mean of its divisors is an integer number (4249926).

Almost surely, 2^8499851 is an apocalyptic number.

8499851 is a deficient number, since it is larger than the sum of its proper divisors (1).

8499851 is an equidigital number, since it uses as much as digits as its factorization.

8499851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 44.

The square root of 8499851 is about 2915.4503940215. The cubic root of 8499851 is about 204.0815626054.

Subtracting from 8499851 its reverse (1589948), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 8499851 in words is "eight million, four hundred ninety-nine thousand, eight hundred fifty-one".