240394577 has 2 divisors, whose sum is σ = 240394578. Its totient is φ = 240394576.

The previous prime is 240394571. The next prime is 240394579. The reversal of 240394577 is 775493042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203804176 + 36590401 = 14276^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 240394577 - 2¹⁶ = 240329041 is a prime.

Together with 240394579, 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 (240394571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120197288 + 120197289.

It is an arithmetic number, because the mean of its divisors is an integer number (120197289).

Almost surely, 2^240394577 is an apocalyptic number.

It is an amenable number.

240394577 is a deficient number, since it is larger than the sum of its proper divisors (1).

240394577 is an equidigital number, since it uses as much as digits as its factorization.

240394577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 240394577 is about 15504.6630727662. The cubic root of 240394577 is about 621.7868820778.

The spelling of 240394577 in words is "two hundred forty million, three hundred ninety-four thousand, five hundred seventy-seven".