8378493 has 4 divisors (see below), whose sum is σ = 11171328. Its totient is φ = 5585660.

The previous prime is 8378483. The next prime is 8378519. The reversal of 8378493 is 3948738.

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.

It is a cyclic number.

It is not a de Polignac number, because 8378493 - 2¹⁶ = 8312957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378483) 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, 1396413 + ... + 1396418.

It is an arithmetic number, because the mean of its divisors is an integer number (2792832).

Almost surely, 2^8378493 is an apocalyptic number.

It is an amenable number.

8378493 is a deficient number, since it is larger than the sum of its proper divisors (2792835).

8378493 is a wasteful number, since it uses less digits than its factorization.

8378493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792834.

The product of its digits is 145152, while the sum is 42.

The square root of 8378493 is about 2894.5626612668. The cubic root of 8378493 is about 203.1056339091.

The spelling of 8378493 in words is "eight million, three hundred seventy-eight thousand, four hundred ninety-three".