7840113 has 4 divisors (see below), whose sum is σ = 10453488. Its totient is φ = 5226740.

The previous prime is 7840081. The next prime is 7840153. The reversal of 7840113 is 3110487.

7840113 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3110487 = 3 ⋅1036829.

It is a cyclic number.

It is not a de Polignac number, because 7840113 - 2⁵ = 7840081 is a prime.

It is a super-2 number, since 2×7840113² = 122934743705538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7840153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306683 + ... + 1306688.

It is an arithmetic number, because the mean of its divisors is an integer number (2613372).

Almost surely, 2^7840113 is an apocalyptic number.

It is an amenable number.

7840113 is a deficient number, since it is larger than the sum of its proper divisors (2613375).

7840113 is a wasteful number, since it uses less digits than its factorization.

7840113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613374.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 7840113 is about 2800.0201784987. The cubic root of 7840113 is about 198.6586321065.

The spelling of 7840113 in words is "seven million, eight hundred forty thousand, one hundred thirteen".