7899134411 has 4 divisors (see below), whose sum is σ = 9027582192. Its totient is φ = 6770686632.

The previous prime is 7899134389. The next prime is 7899134447. The reversal of 7899134411 is 1144319987.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7899134411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7899134491) 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, 564223880 + ... + 564223893.

It is an arithmetic number, because the mean of its divisors is an integer number (2256895548).

Almost surely, 2^7899134411 is an apocalyptic number.

7899134411 is a deficient number, since it is larger than the sum of its proper divisors (1128447781).

7899134411 is a wasteful number, since it uses less digits than its factorization.

7899134411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128447780.

The product of its digits is 217728, while the sum is 47.

The square root of 7899134411 is about 88877.0747212126. The cubic root of 7899134411 is about 1991.5589587811.

The spelling of 7899134411 in words is "seven billion, eight hundred ninety-nine million, one hundred thirty-four thousand, four hundred eleven".