2439466781 has 2 divisors, whose sum is σ = 2439466782. Its totient is φ = 2439466780.

The previous prime is 2439466763. The next prime is 2439466801. The reversal of 2439466781 is 1876649342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2411693881 + 27772900 = 49109^2 + 5270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2439466781 - 2¹⁰ = 2439465757 is a prime.

It is a super-2 number, since 2×2439466781² = 11901996351205003922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2439468781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1219733390 + 1219733391.

It is an arithmetic number, because the mean of its divisors is an integer number (1219733391).

Almost surely, 2^2439466781 is an apocalyptic number.

It is an amenable number.

2439466781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2439466781 is an equidigital number, since it uses as much as digits as its factorization.

2439466781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The square root of 2439466781 is about 49390.9584944451. The cubic root of 2439466781 is about 1346.1650249501.

The spelling of 2439466781 in words is "two billion, four hundred thirty-nine million, four hundred sixty-six thousand, seven hundred eighty-one".