2439784081 has 4 divisors (see below), whose sum is σ = 2788324672. Its totient is φ = 2091243492.

The previous prime is 2439784079. The next prime is 2439784093. The reversal of 2439784081 is 1804879342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2439784081 - 2¹ = 2439784079 is a prime.

It is a super-2 number, since 2×2439784081² = 11905092723802029122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2439784021) 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, 174270285 + ... + 174270298.

It is an arithmetic number, because the mean of its divisors is an integer number (697081168).

Almost surely, 2^2439784081 is an apocalyptic number.

It is an amenable number.

2439784081 is a deficient number, since it is larger than the sum of its proper divisors (348540591).

2439784081 is an equidigital number, since it uses as much as digits as its factorization.

2439784081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348540590.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 2439784081 is about 49394.1705163676. The cubic root of 2439784081 is about 1346.2233873824.

The spelling of 2439784081 in words is "two billion, four hundred thirty-nine million, seven hundred eighty-four thousand, eighty-one".