8144387 has 2 divisors, whose sum is σ = 8144388. Its totient is φ = 8144386.

The previous prime is 8144359. The next prime is 8144393. The reversal of 8144387 is 7834418.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8144387 - 2¹² = 8140291 is a prime.

It is not a weakly prime, because it can be changed into another prime (8144327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4072193 + 4072194.

It is an arithmetic number, because the mean of its divisors is an integer number (4072194).

Almost surely, 2^8144387 is an apocalyptic number.

8144387 is a deficient number, since it is larger than the sum of its proper divisors (1).

8144387 is an equidigital number, since it uses as much as digits as its factorization.

8144387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 8144387 is about 2853.8372413296. The cubic root of 8144387 is about 201.1960579681.

The spelling of 8144387 in words is "eight million, one hundred forty-four thousand, three hundred eighty-seven".