7879402755 has 96 divisors (see below), whose sum is σ = 16037723520. Its totient is φ = 3503554560.

The previous prime is 7879402667. The next prime is 7879402759. The reversal of 7879402755 is 5572049787.

It is a happy number.

It is a Cunningham number, because it is equal to 88766²-1.

It is not a de Polignac number, because 7879402755 - 2⁹ = 7879402243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7879402759) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5591491 + ... + 5592899.

It is an arithmetic number, because the mean of its divisors is an integer number (167059620).

Almost surely, 2^7879402755 is an apocalyptic number.

7879402755 is an abundant number, since it is smaller than the sum of its proper divisors (8158320765).

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

7879402755 is a wasteful number, since it uses less digits than its factorization.

7879402755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The square root of 7879402755 is about 88765.9999943672. Note that the first 5 decimals coincide. The cubic root of 7879402755 is about 1989.8993034239.

The spelling of 7879402755 in words is "seven billion, eight hundred seventy-nine million, four hundred two thousand, seven hundred fifty-five".