8424427 has 4 divisors (see below), whose sum is σ = 9190296. Its totient is φ = 7658560.

The previous prime is 8424407. The next prime is 8424439. The reversal of 8424427 is 7244248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8424427 is a prime.

It is a d-powerful number, because it can be written as 8³ + 4 + 2¹¹ + 4³ + 4⁷ + 2²³ + 7⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8424407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382918 + ... + 382939.

It is an arithmetic number, because the mean of its divisors is an integer number (2297574).

Almost surely, 2^8424427 is an apocalyptic number.

8424427 is a deficient number, since it is larger than the sum of its proper divisors (765869).

8424427 is a wasteful number, since it uses less digits than its factorization.

8424427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765868.

The product of its digits is 14336, while the sum is 31.

The square root of 8424427 is about 2902.4863479438. The cubic root of 8424427 is about 203.4761244318.

The spelling of 8424427 in words is "eight million, four hundred twenty-four thousand, four hundred twenty-seven".