1390260593 has 2 divisors, whose sum is σ = 1390260594. Its totient is φ = 1390260592.

The previous prime is 1390260587. The next prime is 1390260631. The reversal of 1390260593 is 3950620931.

It is an a-pointer prime, because the next prime (1390260631) can be obtained adding 1390260593 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1389276529 + 984064 = 37273^2 + 992^2 .

It is an emirp because it is prime and its reverse (3950620931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1390260593 - 2¹⁴ = 1390244209 is a prime.

It is a super-3 number, since 3×1390260593³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1390262593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695130296 + 695130297.

It is an arithmetic number, because the mean of its divisors is an integer number (695130297).

Almost surely, 2^1390260593 is an apocalyptic number.

It is an amenable number.

1390260593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390260593 is an equidigital number, since it uses as much as digits as its factorization.

1390260593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 1390260593 is about 37286.1984251546. The cubic root of 1390260593 is about 1116.0887681882.

The spelling of 1390260593 in words is "one billion, three hundred ninety million, two hundred sixty thousand, five hundred ninety-three".