240399413 has 4 divisors (see below), whose sum is σ = 243100620. Its totient is φ = 237698208.

The previous prime is 240399403. The next prime is 240399437. The reversal of 240399413 is 314993042.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33097009 + 207302404 = 5753^2 + 14398^2 .

It is a cyclic number.

It is not a de Polignac number, because 240399413 - 2⁶ = 240399349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240399403) 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 3 ways as a sum of consecutive naturals, for example, 1350470 + ... + 1350647.

It is an arithmetic number, because the mean of its divisors is an integer number (60775155).

Almost surely, 2^240399413 is an apocalyptic number.

It is an amenable number.

240399413 is a deficient number, since it is larger than the sum of its proper divisors (2701207).

240399413 is an equidigital number, since it uses as much as digits as its factorization.

240399413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701206.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 240399413 is about 15504.8190250644. The cubic root of 240399413 is about 621.7910515301.

The spelling of 240399413 in words is "two hundred forty million, three hundred ninety-nine thousand, four hundred thirteen".