240109679 has 4 divisors (see below), whose sum is σ = 240255384. Its totient is φ = 239963976.

The previous prime is 240109651. The next prime is 240109693. The reversal of 240109679 is 976901042.

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 240109679 - 2¹⁶ = 240044143 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 (240109609) 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, 70352 + ... + 73685.

It is an arithmetic number, because the mean of its divisors is an integer number (60063846).

Almost surely, 2^240109679 is an apocalyptic number.

240109679 is a deficient number, since it is larger than the sum of its proper divisors (145705).

240109679 is a wasteful number, since it uses less digits than its factorization.

240109679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145704.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 240109679 is about 15495.4728549986. The cubic root of 240109679 is about 621.5411529276.

The spelling of 240109679 in words is "two hundred forty million, one hundred nine thousand, six hundred seventy-nine".