7993819 has 4 divisors (see below), whose sum is σ = 8106480. Its totient is φ = 7881160.

The previous prime is 7993801. The next prime is 7993823. The reversal of 7993819 is 9183997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9183997 = 1373 ⋅6689.

It is a cyclic number.

It is not a de Polignac number, because 7993819 - 2⁵ = 7993787 is a prime.

It is a super-2 number, since 2×7993819² = 127802284409522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7993849) 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, 56224 + ... + 56365.

It is an arithmetic number, because the mean of its divisors is an integer number (2026620).

Almost surely, 2^7993819 is an apocalyptic number.

7993819 is a deficient number, since it is larger than the sum of its proper divisors (112661).

7993819 is a wasteful number, since it uses less digits than its factorization.

7993819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112660.

The product of its digits is 122472, while the sum is 46.

The square root of 7993819 is about 2827.3342568575. The cubic root of 7993819 is about 199.9484783954.

The spelling of 7993819 in words is "seven million, nine hundred ninety-three thousand, eight hundred nineteen".