1394035789 has 2 divisors, whose sum is σ = 1394035790. Its totient is φ = 1394035788.

The previous prime is 1394035781. The next prime is 1394035801. The reversal of 1394035789 is 9875304931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 969263689 + 424772100 = 31133^2 + 20610^2 .

It is an emirp because it is prime and its reverse (9875304931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1394035789 - 2³ = 1394035781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394035781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697017894 + 697017895.

It is an arithmetic number, because the mean of its divisors is an integer number (697017895).

Almost surely, 2^1394035789 is an apocalyptic number.

It is an amenable number.

1394035789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394035789 is an equidigital number, since it uses as much as digits as its factorization.

1394035789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1394035789 is about 37336.7886808708. The cubic root of 1394035789 is about 1117.0980863445.

It can be divided in two parts, 13940 and 35789, that added together give a square (49729 = 223²).

The spelling of 1394035789 in words is "one billion, three hundred ninety-four million, thirty-five thousand, seven hundred eighty-nine".