7839235940 has 12 divisors (see below), whose sum is σ = 16462395516. Its totient is φ = 3135694368.

The previous prime is 7839235919. The next prime is 7839235951. The reversal of 7839235940 is 495329387.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4699650916 + 3139585024 = 68554^2 + 56032^2 .

It is a super-2 number, since 2×7839235940² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 195980879 + ... + 195980918.

It is an arithmetic number, because the mean of its divisors is an integer number (1371866293).

Almost surely, 2^7839235940 is an apocalyptic number.

It is an amenable number.

7839235940 is an abundant number, since it is smaller than the sum of its proper divisors (8623159576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7839235940 is a wasteful number, since it uses less digits than its factorization.

7839235940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391961806 (or 391961804 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 7839235940 is about 88539.4597905363. The cubic root of 7839235940 is about 1986.5122396342.

The spelling of 7839235940 in words is "seven billion, eight hundred thirty-nine million, two hundred thirty-five thousand, nine hundred forty".