1423040393 has 2 divisors, whose sum is σ = 1423040394. Its totient is φ = 1423040392.

The previous prime is 1423040389. The next prime is 1423040413. The reversal of 1423040393 is 3930403241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1161991744 + 261048649 = 34088^2 + 16157^2 .

It is an emirp because it is prime and its reverse (3930403241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1423040393 - 2² = 1423040389 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423040303) 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, 711520196 + 711520197.

It is an arithmetic number, because the mean of its divisors is an integer number (711520197).

Almost surely, 2^1423040393 is an apocalyptic number.

It is an amenable number.

1423040393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423040393 is an equidigital number, since it uses as much as digits as its factorization.

1423040393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 1423040393 is about 37723.2076181228. The cubic root of 1423040393 is about 1124.7924932173.

The spelling of 1423040393 in words is "one billion, four hundred twenty-three million, forty thousand, three hundred ninety-three".