2408139521 has 2 divisors, whose sum is σ = 2408139522. Its totient is φ = 2408139520.

The previous prime is 2408139493. The next prime is 2408139563. The reversal of 2408139521 is 1259318042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2010535921 + 397603600 = 44839^2 + 19940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2408139521 - 2¹⁸ = 2407877377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2408169521) 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 as a sum of consecutive naturals, namely, 1204069760 + 1204069761.

It is an arithmetic number, because the mean of its divisors is an integer number (1204069761).

Almost surely, 2^2408139521 is an apocalyptic number.

It is an amenable number.

2408139521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2408139521 is an equidigital number, since it uses as much as digits as its factorization.

2408139521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2408139521 is about 49072.7981778093. The cubic root of 2408139521 is about 1340.3777655129.

The spelling of 2408139521 in words is "two billion, four hundred eight million, one hundred thirty-nine thousand, five hundred twenty-one".