4155839449 has 2 divisors, whose sum is σ = 4155839450. Its totient is φ = 4155839448.

The previous prime is 4155839419. The next prime is 4155839453. The reversal of 4155839449 is 9449385514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2369255625 + 1786583824 = 48675^2 + 42268^2 .

It is a cyclic number.

It is not a de Polignac number, because 4155839449 - 2⁷ = 4155839321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4155839396 and 4155839405.

It is not a weakly prime, because it can be changed into another prime (4155839419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077919724 + 2077919725.

It is an arithmetic number, because the mean of its divisors is an integer number (2077919725).

Almost surely, 2^4155839449 is an apocalyptic number.

It is an amenable number.

4155839449 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155839449 is an equidigital number, since it uses as much as digits as its factorization.

4155839449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 52.

The square root of 4155839449 is about 64465.8006155202. The cubic root of 4155839449 is about 1607.7539568151.

The spelling of 4155839449 in words is "four billion, one hundred fifty-five million, eight hundred thirty-nine thousand, four hundred forty-nine".