7993103987 has 4 divisors (see below), whose sum is σ = 8719749816. Its totient is φ = 7266458160.

The previous prime is 7993103983. The next prime is 7993104059. The reversal of 7993103987 is 7893013997.

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 7993103987 - 2² = 7993103983 is a prime.

It is a super-2 number, since 2×7993103987² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7993103983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363322898 + ... + 363322919.

It is an arithmetic number, because the mean of its divisors is an integer number (2179937454).

Almost surely, 2^7993103987 is an apocalyptic number.

7993103987 is a deficient number, since it is larger than the sum of its proper divisors (726645829).

7993103987 is a wasteful number, since it uses less digits than its factorization.

7993103987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726645828.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The square root of 7993103987 is about 89404.1609042890. The cubic root of 7993103987 is about 1999.4251670494.

The spelling of 7993103987 in words is "seven billion, nine hundred ninety-three million, one hundred three thousand, nine hundred eighty-seven".