240766109 has 2 divisors, whose sum is σ = 240766110. Its totient is φ = 240766108.

The previous prime is 240766103. The next prime is 240766133. The reversal of 240766109 is 901667042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215796100 + 24970009 = 14690^2 + 4997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240766109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240766103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120383054 + 120383055.

It is an arithmetic number, because the mean of its divisors is an integer number (120383055).

Almost surely, 2^240766109 is an apocalyptic number.

It is an amenable number.

240766109 is a deficient number, since it is larger than the sum of its proper divisors (1).

240766109 is an equidigital number, since it uses as much as digits as its factorization.

240766109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 240766109 is about 15516.6397457697. The cubic root of 240766109 is about 622.1070429533.

The spelling of 240766109 in words is "two hundred forty million, seven hundred sixty-six thousand, one hundred nine".