7240239839 has 16 divisors (see below), whose sum is σ = 8396651520. Its totient is φ = 6114467520.

The previous prime is 7240239833. The next prime is 7240239857. The reversal of 7240239839 is 9389320427.

It is not a de Polignac number, because 7240239839 - 2²⁸ = 6971804383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7240239793 and 7240239802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240239833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929987 + ... + 937739.

It is an arithmetic number, because the mean of its divisors is an integer number (524790720).

Almost surely, 2^7240239839 is an apocalyptic number.

7240239839 is a deficient number, since it is larger than the sum of its proper divisors (1156411681).

7240239839 is a wasteful number, since it uses less digits than its factorization.

7240239839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 7240239839 is about 85089.5988884658. The cubic root of 7240239839 is about 1934.5694158174.

The spelling of 7240239839 in words is "seven billion, two hundred forty million, two hundred thirty-nine thousand, eight hundred thirty-nine".