7909499911 has 4 divisors (see below), whose sum is σ = 8325789400. Its totient is φ = 7493210424.

The previous prime is 7909499909. The next prime is 7909499959. The reversal of 7909499911 is 1199949097.

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

It is not a de Polignac number, because 7909499911 - 2¹ = 7909499909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7909499971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208144716 + ... + 208144753.

It is an arithmetic number, because the mean of its divisors is an integer number (2081447350).

Almost surely, 2^7909499911 is an apocalyptic number.

7909499911 is a deficient number, since it is larger than the sum of its proper divisors (416289489).

7909499911 is a wasteful number, since it uses less digits than its factorization.

7909499911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416289488.

The product of its (nonzero) digits is 1653372, while the sum is 58.

The square root of 7909499911 is about 88935.3692914130. The cubic root of 7909499911 is about 1992.4297074057.

The spelling of 7909499911 in words is "seven billion, nine hundred nine million, four hundred ninety-nine thousand, nine hundred eleven".