7779408099 has 4 divisors (see below), whose sum is σ = 10372544136. Its totient is φ = 5186272064.

The previous prime is 7779408067. The next prime is 7779408103. The reversal of 7779408099 is 9908049777.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9908049777 = 3 ⋅3302683259.

It is a cyclic number.

It is not a de Polignac number, because 7779408099 - 2⁵ = 7779408067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7779407099) 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, 1296568014 + ... + 1296568019.

It is an arithmetic number, because the mean of its divisors is an integer number (2593136034).

Almost surely, 2^7779408099 is an apocalyptic number.

7779408099 is a deficient number, since it is larger than the sum of its proper divisors (2593136037).

7779408099 is a wasteful number, since it uses less digits than its factorization.

7779408099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593136036.

The product of its (nonzero) digits is 8001504, while the sum is 60.

The square root of 7779408099 is about 88200.9529370290. The cubic root of 7779408099 is about 1981.4457436605.

The spelling of 7779408099 in words is "seven billion, seven hundred seventy-nine million, four hundred eight thousand, ninety-nine".