7844134 has 4 divisors (see below), whose sum is σ = 11766204. Its totient is φ = 3922066.

The previous prime is 7844129. The next prime is 7844141. The reversal of 7844134 is 4314487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4314487 = 31 ⋅139177.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7844096 and 7844105.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1961032 + ... + 1961035.

It is an arithmetic number, because the mean of its divisors is an integer number (2941551).

Almost surely, 2^7844134 is an apocalyptic number.

7844134 is a deficient number, since it is larger than the sum of its proper divisors (3922070).

7844134 is a wasteful number, since it uses less digits than its factorization.

7844134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922069.

The product of its digits is 10752, while the sum is 31.

The square root of 7844134 is about 2800.7381169970. The cubic root of 7844134 is about 198.6925886680.

The spelling of 7844134 in words is "seven million, eight hundred forty-four thousand, one hundred thirty-four".