240668979 has 16 divisors (see below), whose sum is σ = 337235712. Its totient is φ = 152476128.

The previous prime is 240668969. The next prime is 240669043. The reversal of 240668979 is 979866042.

It is a happy number.

It is not a de Polignac number, because 240668979 - 2⁴ = 240668963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240668929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20439 + ... + 29984.

It is an arithmetic number, because the mean of its divisors is an integer number (21077232).

Almost surely, 2^240668979 is an apocalyptic number.

240668979 is a deficient number, since it is larger than the sum of its proper divisors (96566733).

240668979 is a wasteful number, since it uses less digits than its factorization.

240668979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50506.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 240668979 is about 15513.5095642475. The cubic root of 240668979 is about 622.0233747759.

The spelling of 240668979 in words is "two hundred forty million, six hundred sixty-eight thousand, nine hundred seventy-nine".