254404393 has 2 divisors, whose sum is σ = 254404394. Its totient is φ = 254404392.

The previous prime is 254404351. The next prime is 254404429. The reversal of 254404393 is 393404452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232623504 + 21780889 = 15252^2 + 4667^2 .

It is a cyclic number.

It is not a de Polignac number, because 254404393 - 2¹⁷ = 254273321 is a prime.

It is not a weakly prime, because it can be changed into another prime (254404093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127202196 + 127202197.

It is an arithmetic number, because the mean of its divisors is an integer number (127202197).

Almost surely, 2^254404393 is an apocalyptic number.

It is an amenable number.

254404393 is a deficient number, since it is larger than the sum of its proper divisors (1).

254404393 is an equidigital number, since it uses as much as digits as its factorization.

254404393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 254404393 is about 15950.0593415824. The cubic root of 254404393 is about 633.6384682618.

The spelling of 254404393 in words is "two hundred fifty-four million, four hundred four thousand, three hundred ninety-three".