2424439981 has 2 divisors, whose sum is σ = 2424439982. Its totient is φ = 2424439980.

The previous prime is 2424439961. The next prime is 2424439999. The reversal of 2424439981 is 1899344242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2339173225 + 85266756 = 48365^2 + 9234^2 .

It is a cyclic number.

It is not a de Polignac number, because 2424439981 - 2²⁹ = 1887569069 is a prime.

It is a super-2 number, since 2×2424439981² = 11755818442942560722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2424439931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212219990 + 1212219991.

It is an arithmetic number, because the mean of its divisors is an integer number (1212219991).

Almost surely, 2^2424439981 is an apocalyptic number.

It is an amenable number.

2424439981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2424439981 is an equidigital number, since it uses as much as digits as its factorization.

2424439981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 46.

The square root of 2424439981 is about 49238.6025492194. The cubic root of 2424439981 is about 1343.3952625072.

The spelling of 2424439981 in words is "two billion, four hundred twenty-four million, four hundred thirty-nine thousand, nine hundred eighty-one".