240405445 has 8 divisors (see below), whose sum is σ = 329698944. Its totient is φ = 164849424.

The previous prime is 240405443. The next prime is 240405457. The reversal of 240405445 is 544504042.

240405445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240405445 - 2¹ = 240405443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240405443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3434329 + ... + 3434398.

It is an arithmetic number, because the mean of its divisors is an integer number (41212368).

Almost surely, 2^240405445 is an apocalyptic number.

It is an amenable number.

240405445 is a deficient number, since it is larger than the sum of its proper divisors (89293499).

240405445 is an equidigital number, since it uses as much as digits as its factorization.

240405445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868739.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 240405445 is about 15505.0135440121. The cubic root of 240405445 is about 621.7962520590.

Adding to 240405445 its reverse (544504042), we get a palindrome (784909487).

The spelling of 240405445 in words is "two hundred forty million, four hundred five thousand, four hundred forty-five".