1389893801 has 2 divisors, whose sum is σ = 1389893802. Its totient is φ = 1389893800.

The previous prime is 1389893777. The next prime is 1389893849. The reversal of 1389893801 is 1083989831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763693225 + 626200576 = 27635^2 + 25024^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389893801 - 2⁶ = 1389893737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389893801.

It is not a weakly prime, because it can be changed into another prime (1389893851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694946900 + 694946901.

It is an arithmetic number, because the mean of its divisors is an integer number (694946901).

Almost surely, 2^1389893801 is an apocalyptic number.

It is an amenable number.

1389893801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389893801 is an equidigital number, since it uses as much as digits as its factorization.

1389893801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 1389893801 is about 37281.2794978928. The cubic root of 1389893801 is about 1115.9906071095.

The spelling of 1389893801 in words is "one billion, three hundred eighty-nine million, eight hundred ninety-three thousand, eight hundred one".