8424149 has 4 divisors (see below), whose sum is σ = 8477964. Its totient is φ = 8370336.

The previous prime is 8424137. The next prime is 8424151. The reversal of 8424149 is 9414248.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4452100 + 3972049 = 2110^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 8424149 - 2⁸ = 8423893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8424109) 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, 26672 + ... + 26985.

It is an arithmetic number, because the mean of its divisors is an integer number (2119491).

Almost surely, 2^8424149 is an apocalyptic number.

It is an amenable number.

8424149 is a deficient number, since it is larger than the sum of its proper divisors (53815).

8424149 is a wasteful number, since it uses less digits than its factorization.

8424149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53814.

The product of its digits is 9216, while the sum is 32.

The square root of 8424149 is about 2902.4384575732. The cubic root of 8424149 is about 203.4738862189.

Subtracting 8424149 from its reverse (9414248), we obtain a palindrome (990099).

The spelling of 8424149 in words is "eight million, four hundred twenty-four thousand, one hundred forty-nine".