2440782431 has 4 divisors (see below), whose sum is σ = 2441586000. Its totient is φ = 2439978864.

The previous prime is 2440782403. The next prime is 2440782433. The reversal of 2440782431 is 1342870442.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2440782431 is a prime.

It is a super-2 number, since 2×2440782431² = 11914837750956539522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2440782391 and 2440782400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440782433) 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, 397211 + ... + 403308.

It is an arithmetic number, because the mean of its divisors is an integer number (610396500).

Almost surely, 2^2440782431 is an apocalyptic number.

2440782431 is a deficient number, since it is larger than the sum of its proper divisors (803569).

2440782431 is an equidigital number, since it uses as much as digits as its factorization.

2440782431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803568.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 2440782431 is about 49404.2754323955. The cubic root of 2440782431 is about 1346.4069854381.

The spelling of 2440782431 in words is "two billion, four hundred forty million, seven hundred eighty-two thousand, four hundred thirty-one".