254917849 has 2 divisors, whose sum is σ = 254917850. Its totient is φ = 254917848.

The previous prime is 254917847. The next prime is 254917877. The reversal of 254917849 is 948719452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254721600 + 196249 = 15960^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 254917849 - 2¹ = 254917847 is a prime.

Together with 254917847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (254917847) 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, 127458924 + 127458925.

It is an arithmetic number, because the mean of its divisors is an integer number (127458925).

Almost surely, 2^254917849 is an apocalyptic number.

It is an amenable number.

254917849 is a deficient number, since it is larger than the sum of its proper divisors (1).

254917849 is an equidigital number, since it uses as much as digits as its factorization.

254917849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 254917849 is about 15966.1469678818. The cubic root of 254917849 is about 634.0644656756.

The spelling of 254917849 in words is "two hundred fifty-four million, nine hundred seventeen thousand, eight hundred forty-nine".