8239144 has 24 divisors (see below), whose sum is σ = 15844410. Its totient is φ = 4016544.

The previous prime is 8239139. The next prime is 8239151. The reversal of 8239144 is 4419328.

8239144 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8054244 + 184900 = 2838^2 + 430^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14514 + ... + 15070.

Almost surely, 2^8239144 is an apocalyptic number.

It is an amenable number.

8239144 is a deficient number, since it is larger than the sum of its proper divisors (7605266).

8239144 is a wasteful number, since it uses less digits than its factorization.

8239144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 602 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 8239144 is about 2870.3909141439. The cubic root of 8239144 is about 201.9733324270.

The spelling of 8239144 in words is "eight million, two hundred thirty-nine thousand, one hundred forty-four".