7990001111 has 4 divisors (see below), whose sum is σ = 8003296224. Its totient is φ = 7976706000.

The previous prime is 7990001069. The next prime is 7990001137. The reversal of 7990001111 is 1111000997.

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

It is a cyclic number.

It is not a de Polignac number, because 7990001111 - 2¹⁰ = 7990000087 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 (7990001141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6646655 + ... + 6647856.

It is an arithmetic number, because the mean of its divisors is an integer number (2000824056).

Almost surely, 2^7990001111 is an apocalyptic number.

7990001111 is a deficient number, since it is larger than the sum of its proper divisors (13295113).

7990001111 is a wasteful number, since it uses less digits than its factorization.

7990001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13295112.

The product of its (nonzero) digits is 567, while the sum is 29.

The square root of 7990001111 is about 89386.8061349101. The cubic root of 7990001111 is about 1999.1664118637.

The spelling of 7990001111 in words is "seven billion, nine hundred ninety million, one thousand, one hundred eleven".