245408393 has 2 divisors, whose sum is σ = 245408394. Its totient is φ = 245408392.

The previous prime is 245408381. The next prime is 245408417. The reversal of 245408393 is 393804542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240777289 + 4631104 = 15517^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 245408393 - 2¹⁴ = 245392009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245408593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122704196 + 122704197.

It is an arithmetic number, because the mean of its divisors is an integer number (122704197).

Almost surely, 2^245408393 is an apocalyptic number.

It is an amenable number.

245408393 is a deficient number, since it is larger than the sum of its proper divisors (1).

245408393 is an equidigital number, since it uses as much as digits as its factorization.

245408393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 245408393 is about 15665.5160463995. The cubic root of 245408393 is about 626.0799615115.

The spelling of 245408393 in words is "two hundred forty-five million, four hundred eight thousand, three hundred ninety-three".