240917855 has 4 divisors (see below), whose sum is σ = 289101432. Its totient is φ = 192734280.

The previous prime is 240917849. The next prime is 240917861. The reversal of 240917855 is 558719042.

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

It is an interprime number because it is at equal distance from previous prime (240917849) and next prime (240917861).

It is not a de Polignac number, because 240917855 - 2⁶ = 240917791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 24091781 + ... + 24091790.

It is an arithmetic number, because the mean of its divisors is an integer number (72275358).

Almost surely, 2^240917855 is an apocalyptic number.

240917855 is a deficient number, since it is larger than the sum of its proper divisors (48183577).

240917855 is an equidigital number, since it uses as much as digits as its factorization.

240917855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48183576.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 240917855 is about 15521.5287584696. The cubic root of 240917855 is about 622.2377125478.

The spelling of 240917855 in words is "two hundred forty million, nine hundred seventeen thousand, eight hundred fifty-five".