4449471613 has 2 divisors, whose sum is σ = 4449471614. Its totient is φ = 4449471612.

The previous prime is 4449471599. The next prime is 4449471617. The reversal of 4449471613 is 3161749444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3762350244 + 687121369 = 61338^2 + 26213^2 .

It is a cyclic number.

It is not a de Polignac number, because 4449471613 - 2²⁹ = 3912600701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4449471613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4449471617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2224735806 + 2224735807.

It is an arithmetic number, because the mean of its divisors is an integer number (2224735807).

Almost surely, 2^4449471613 is an apocalyptic number.

It is an amenable number.

4449471613 is a deficient number, since it is larger than the sum of its proper divisors (1).

4449471613 is an equidigital number, since it uses as much as digits as its factorization.

4449471613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 4449471613 is about 66704.3597750552. The cubic root of 4449471613 is about 1644.7610524965.

The spelling of 4449471613 in words is "four billion, four hundred forty-nine million, four hundred seventy-one thousand, six hundred thirteen".