240040447 has 2 divisors, whose sum is σ = 240040448. Its totient is φ = 240040446.

The previous prime is 240040439. The next prime is 240040477. The reversal of 240040447 is 744040042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240040447 - 2³ = 240040439 is a prime.

It is equal to p_13163704 and since 240040447 and 13163704 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240040477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120020223 + 120020224.

It is an arithmetic number, because the mean of its divisors is an integer number (120020224).

Almost surely, 2^240040447 is an apocalyptic number.

240040447 is a deficient number, since it is larger than the sum of its proper divisors (1).

240040447 is an equidigital number, since it uses as much as digits as its factorization.

240040447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 240040447 is about 15493.2387511456. The cubic root of 240040447 is about 621.4814098501.

Adding to 240040447 its reverse (744040042), we get a palindrome (984080489).

The spelling of 240040447 in words is "two hundred forty million, forty thousand, four hundred forty-seven".