8499427 has 4 divisors (see below), whose sum is σ = 8507536. Its totient is φ = 8491320.

The previous prime is 8499409. The next prime is 8499461. The reversal of 8499427 is 7249948.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8499427 - 2¹⁹ = 7975139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8499727) 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, 2199 + ... + 4672.

It is an arithmetic number, because the mean of its divisors is an integer number (2126884).

Almost surely, 2^8499427 is an apocalyptic number.

8499427 is a deficient number, since it is larger than the sum of its proper divisors (8109).

8499427 is a wasteful number, since it uses less digits than its factorization.

8499427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8108.

The product of its digits is 145152, while the sum is 43.

The square root of 8499427 is about 2915.3776770772. The cubic root of 8499427 is about 204.0781691333.

The spelling of 8499427 in words is "eight million, four hundred ninety-nine thousand, four hundred twenty-seven".