240505469 has 2 divisors, whose sum is σ = 240505470. Its totient is φ = 240505468.

The previous prime is 240505459. The next prime is 240505537. The reversal of 240505469 is 964505042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184824025 + 55681444 = 13595^2 + 7462^2 .

It is a cyclic number.

It is not a de Polignac number, because 240505469 - 2⁴ = 240505453 is a prime.

It is a super-2 number, since 2×240505469² = 115685761237819922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240505429) 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, 120252734 + 120252735.

It is an arithmetic number, because the mean of its divisors is an integer number (120252735).

Almost surely, 2^240505469 is an apocalyptic number.

It is an amenable number.

240505469 is a deficient number, since it is larger than the sum of its proper divisors (1).

240505469 is an equidigital number, since it uses as much as digits as its factorization.

240505469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 240505469 is about 15508.2387459054. The cubic root of 240505469 is about 621.8824757365.

The spelling of 240505469 in words is "two hundred forty million, five hundred five thousand, four hundred sixty-nine".