254140009 has 2 divisors, whose sum is σ = 254140010. Its totient is φ = 254140008.

The previous prime is 254140001. The next prime is 254140039. The reversal of 254140009 is 900041452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251317609 + 2822400 = 15853^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 254140009 - 2³ = 254140001 is a prime.

It is not a weakly prime, because it can be changed into another prime (254140001) 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, 127070004 + 127070005.

It is an arithmetic number, because the mean of its divisors is an integer number (127070005).

Almost surely, 2^254140009 is an apocalyptic number.

It is an amenable number.

254140009 is a deficient number, since it is larger than the sum of its proper divisors (1).

254140009 is an equidigital number, since it uses as much as digits as its factorization.

254140009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 254140009 is about 15941.7693183661. The cubic root of 254140009 is about 633.4188940423.

The spelling of 254140009 in words is "two hundred fifty-four million, one hundred forty thousand, nine".