7999991103 has 8 divisors (see below), whose sum is σ = 11487166768. Its totient is φ = 4923071424.

The previous prime is 7999991093. The next prime is 7999991113. The reversal of 7999991103 is 3011999997.

It is an interprime number because it is at equal distance from previous prime (7999991093) and next prime (7999991113).

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

It is not a de Polignac number, because 7999991103 - 2¹⁶ = 7999925567 is a prime.

It is a super-3 number, since 3×7999991103³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999991113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102563950 + ... + 102564027.

It is an arithmetic number, because the mean of its divisors is an integer number (1435895846).

Almost surely, 2^7999991103 is an apocalyptic number.

7999991103 is a deficient number, since it is larger than the sum of its proper divisors (3487175665).

7999991103 is a wasteful number, since it uses less digits than its factorization.

7999991103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205127993.

The product of its (nonzero) digits is 1240029, while the sum is 57.

The square root of 7999991103 is about 89442.6693642358. The cubic root of 7999991103 is about 1999.9992585831. Note that the first 3 decimals are identical.

The spelling of 7999991103 in words is "seven billion, nine hundred ninety-nine million, nine hundred ninety-one thousand, one hundred three".