240065387 has 4 divisors (see below), whose sum is σ = 241655376. Its totient is φ = 238475400.

The previous prime is 240065383. The next prime is 240065389. The reversal of 240065387 is 783560042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240065387 - 2² = 240065383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240065383) 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 in 3 ways as a sum of consecutive naturals, for example, 794768 + ... + 795069.

It is an arithmetic number, because the mean of its divisors is an integer number (60413844).

Almost surely, 2^240065387 is an apocalyptic number.

240065387 is a deficient number, since it is larger than the sum of its proper divisors (1589989).

240065387 is a wasteful number, since it uses less digits than its factorization.

240065387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589988.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 240065387 is about 15494.0435974603. The cubic root of 240065387 is about 621.5029329029.

The spelling of 240065387 in words is "two hundred forty million, sixty-five thousand, three hundred eighty-seven".