4239731528 has 12 divisors (see below), whose sum is σ = 7949841945. Its totient is φ = 2119773680.

The previous prime is 4239731479. The next prime is 4239731579. The reversal of 4239731528 is 8251379324.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 3535253764 + 704477764 = 59458^2 + 26542^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=46042.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 172658 + ... + 195678.

Almost surely, 2^4239731528 is an apocalyptic number.

It is an amenable number.

4239731528 is a deficient number, since it is larger than the sum of its proper divisors (3710110417).

4239731528 is an frugal number, since it uses more digits than its factorization.

4239731528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46048 (or 23023 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 4239731528 is about 65113.2208387820. The cubic root of 4239731528 is about 1618.5003049355.

The spelling of 4239731528 in words is "four billion, two hundred thirty-nine million, seven hundred thirty-one thousand, five hundred twenty-eight".