8378143 has 4 divisors (see below), whose sum is σ = 8385048. Its totient is φ = 8371240.

The previous prime is 8378131. The next prime is 8378147. The reversal of 8378143 is 3418738.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8378143 - 2²¹ = 6280991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8378099 and 8378108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378147) 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, 1096 + ... + 4237.

It is an arithmetic number, because the mean of its divisors is an integer number (2096262).

Almost surely, 2^8378143 is an apocalyptic number.

8378143 is a deficient number, since it is larger than the sum of its proper divisors (6905).

8378143 is a wasteful number, since it uses less digits than its factorization.

8378143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904.

The product of its digits is 16128, while the sum is 34.

The square root of 8378143 is about 2894.5022024521. The cubic root of 8378143 is about 203.1028057171.

The spelling of 8378143 in words is "eight million, three hundred seventy-eight thousand, one hundred forty-three".