240039479 has 4 divisors (see below), whose sum is σ = 247782720. Its totient is φ = 232296240.

The previous prime is 240039469. The next prime is 240039509. The reversal of 240039479 is 974930042.

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 240039479 - 2²⁰ = 238990903 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 (240039469) 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, 3871574 + ... + 3871635.

It is an arithmetic number, because the mean of its divisors is an integer number (61945680).

Almost surely, 2^240039479 is an apocalyptic number.

240039479 is a deficient number, since it is larger than the sum of its proper divisors (7743241).

240039479 is an equidigital number, since it uses as much as digits as its factorization.

240039479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7743240.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 240039479 is about 15493.2075116807. The cubic root of 240039479 is about 621.4805744426.

The spelling of 240039479 in words is "two hundred forty million, thirty-nine thousand, four hundred seventy-nine".