2440240991 has 2 divisors, whose sum is σ = 2440240992. Its totient is φ = 2440240990.

The previous prime is 2440240967. The next prime is 2440241053. The reversal of 2440240991 is 1990420442.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2440240991 - 2¹⁴ = 2440224607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2440245991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1220120495 + 1220120496.

It is an arithmetic number, because the mean of its divisors is an integer number (1220120496).

Almost surely, 2^2440240991 is an apocalyptic number.

2440240991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440240991 is an equidigital number, since it uses as much as digits as its factorization.

2440240991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2440240991 is about 49398.7954407797. The cubic root of 2440240991 is about 1346.3074200282.

The spelling of 2440240991 in words is "two billion, four hundred forty million, two hundred forty thousand, nine hundred ninety-one".