2404240391 has 4 divisors (see below), whose sum is σ = 2747703312. Its totient is φ = 2060777472.

The previous prime is 2404240379. The next prime is 2404240441. The reversal of 2404240391 is 1930424042.

2404240391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1930424042 = 2 ⋅965212021.

It is a cyclic number.

It is not a de Polignac number, because 2404240391 - 2¹⁰ = 2404239367 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 (2404240291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171731450 + ... + 171731463.

It is an arithmetic number, because the mean of its divisors is an integer number (686925828).

Almost surely, 2^2404240391 is an apocalyptic number.

2404240391 is a deficient number, since it is larger than the sum of its proper divisors (343462921).

2404240391 is an equidigital number, since it uses as much as digits as its factorization.

2404240391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343462920.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2404240391 is about 49033.0540655995. The cubic root of 2404240391 is about 1339.6539521887.

The spelling of 2404240391 in words is "two billion, four hundred four million, two hundred forty thousand, three hundred ninety-one".