1147387 has 2 divisors, whose sum is σ = 1147388. Its totient is φ = 1147386.

The previous prime is 1147379. The next prime is 1147409. The reversal of 1147387 is 7837411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1147387 - 2³ = 1147379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1147187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573693 + 573694.

It is an arithmetic number, because the mean of its divisors is an integer number (573694).

2^1147387 is an apocalyptic number.

1147387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147387 is an equidigital number, since it uses as much as digits as its factorization.

1147387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 31.

The square root of 1147387 is about 1071.1615190997. The cubic root of 1147387 is about 104.6895440456.

The spelling of 1147387 in words is "one million, one hundred forty-seven thousand, three hundred eighty-seven".