8373391 has 4 divisors (see below), whose sum is σ = 9017512. Its totient is φ = 7729272.

The previous prime is 8373377. The next prime is 8373397. The reversal of 8373391 is 1933738.

8373391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1933738 = 2 ⋅966869.

It is a cyclic number.

It is not a de Polignac number, because 8373391 - 2⁷ = 8373263 is a prime.

It is a super-2 number, since 2×8373391² = 140227353677762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8373397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322041 + ... + 322066.

It is an arithmetic number, because the mean of its divisors is an integer number (2254378).

Almost surely, 2^8373391 is an apocalyptic number.

8373391 is a deficient number, since it is larger than the sum of its proper divisors (644121).

8373391 is a wasteful number, since it uses less digits than its factorization.

8373391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644120.

The product of its digits is 13608, while the sum is 34.

The square root of 8373391 is about 2893.6812194850. The cubic root of 8373391 is about 203.0643991528.

The spelling of 8373391 in words is "eight million, three hundred seventy-three thousand, three hundred ninety-one".