7139839952 has 80 divisors (see below), whose sum is σ = 16536441600. Its totient is φ = 2919899136.

The previous prime is 7139839943. The next prime is 7139839957. The reversal of 7139839952 is 2599389317.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7139839957) 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, 1153538 + ... + 1159710.

It is an arithmetic number, because the mean of its divisors is an integer number (206705520).

Almost surely, 2^7139839952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7139839952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8268220800).

7139839952 is an abundant number, since it is smaller than the sum of its proper divisors (9396601648).

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

7139839952 is a wasteful number, since it uses less digits than its factorization.

7139839952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660 (or 6654 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 56.

The square root of 7139839952 is about 84497.5736456379. The cubic root of 7139839952 is about 1925.5855824153.

The spelling of 7139839952 in words is "seven billion, one hundred thirty-nine million, eight hundred thirty-nine thousand, nine hundred fifty-two".