7798879994 has 8 divisors (see below), whose sum is σ = 12075685248. Its totient is φ = 3773651580.

The previous prime is 7798879993. The next prime is 7798880009. The reversal of 7798879994 is 4999788977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7798879993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62894132 + ... + 62894255.

It is an arithmetic number, because the mean of its divisors is an integer number (1509460656).

Almost surely, 2^7798879994 is an apocalyptic number.

7798879994 is a deficient number, since it is larger than the sum of its proper divisors (4276805254).

7798879994 is a wasteful number, since it uses less digits than its factorization.

7798879994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125788420.

The product of its digits is 576108288, while the sum is 77.

The square root of 7798879994 is about 88311.2676502834. The cubic root of 7798879994 is about 1983.0975555952.

The spelling of 7798879994 in words is "seven billion, seven hundred ninety-eight million, eight hundred seventy-nine thousand, nine hundred ninety-four".