8378291 has 2 divisors, whose sum is σ = 8378292. Its totient is φ = 8378290.

The previous prime is 8378287. The next prime is 8378299. The reversal of 8378291 is 1928738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8378291 - 2² = 8378287 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8378299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4189145 + 4189146.

It is an arithmetic number, because the mean of its divisors is an integer number (4189146).

Almost surely, 2^8378291 is an apocalyptic number.

8378291 is a deficient number, since it is larger than the sum of its proper divisors (1).

8378291 is an equidigital number, since it uses as much as digits as its factorization.

8378291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 8378291 is about 2894.5277680478. The cubic root of 8378291 is about 203.1040016479.

The spelling of 8378291 in words is "eight million, three hundred seventy-eight thousand, two hundred ninety-one".