254392889 has 2 divisors, whose sum is σ = 254392890. Its totient is φ = 254392888.

The previous prime is 254392861. The next prime is 254392891. The reversal of 254392889 is 988293452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186049600 + 68343289 = 13640^2 + 8267^2 .

It is a cyclic number.

It is not a de Polignac number, because 254392889 - 2¹² = 254388793 is a prime.

Together with 254392891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254391889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127196444 + 127196445.

It is an arithmetic number, because the mean of its divisors is an integer number (127196445).

Almost surely, 2^254392889 is an apocalyptic number.

It is an amenable number.

254392889 is a deficient number, since it is larger than the sum of its proper divisors (1).

254392889 is an equidigital number, since it uses as much as digits as its factorization.

254392889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 50.

The square root of 254392889 is about 15949.6987118879. The cubic root of 254392889 is about 633.6289172124.

The spelling of 254392889 in words is "two hundred fifty-four million, three hundred ninety-two thousand, eight hundred eighty-nine".