1394047357 has 2 divisors, whose sum is σ = 1394047358. Its totient is φ = 1394047356.

The previous prime is 1394047331. The next prime is 1394047367. The reversal of 1394047357 is 7537404931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 860483556 + 533563801 = 29334^2 + 23099^2 .

It is a cyclic number.

It is not a de Polignac number, because 1394047357 - 2¹¹ = 1394045309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394047367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697023678 + 697023679.

It is an arithmetic number, because the mean of its divisors is an integer number (697023679).

Almost surely, 2^1394047357 is an apocalyptic number.

It is an amenable number.

1394047357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394047357 is an equidigital number, since it uses as much as digits as its factorization.

1394047357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 1394047357 is about 37336.9435947829. The cubic root of 1394047357 is about 1117.1011763070.

The spelling of 1394047357 in words is "one billion, three hundred ninety-four million, forty-seven thousand, three hundred fifty-seven".