1394047387 has 2 divisors, whose sum is σ = 1394047388. Its totient is φ = 1394047386.

The previous prime is 1394047367. The next prime is 1394047469. The reversal of 1394047387 is 7837404931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1394047387 - 2¹⁵ = 1394014619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1394047357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697023693 + 697023694.

It is an arithmetic number, because the mean of its divisors is an integer number (697023694).

Almost surely, 2^1394047387 is an apocalyptic number.

1394047387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394047387 is an equidigital number, since it uses as much as digits as its factorization.

1394047387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 1394047387 is about 37336.9439965298. The cubic root of 1394047387 is about 1117.1011843204.

The spelling of 1394047387 in words is "one billion, three hundred ninety-four million, forty-seven thousand, three hundred eighty-seven".