240858109 has 2 divisors, whose sum is σ = 240858110. Its totient is φ = 240858108.

The previous prime is 240858103. The next prime is 240858113. The reversal of 240858109 is 901858042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240715225 + 142884 = 15515^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 240858109 - 2⁹ = 240857597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240858103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120429054 + 120429055.

It is an arithmetic number, because the mean of its divisors is an integer number (120429055).

Almost surely, 2^240858109 is an apocalyptic number.

It is an amenable number.

240858109 is a deficient number, since it is larger than the sum of its proper divisors (1).

240858109 is an equidigital number, since it uses as much as digits as its factorization.

240858109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 240858109 is about 15519.6040220104. The cubic root of 240858109 is about 622.1862713793.

The spelling of 240858109 in words is "two hundred forty million, eight hundred fifty-eight thousand, one hundred nine".