4449693257 has 2 divisors, whose sum is σ = 4449693258. Its totient is φ = 4449693256.

The previous prime is 4449693253. The next prime is 4449693293. The reversal of 4449693257 is 7523969444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4269838336 + 179854921 = 65344^2 + 13411^2 .

It is a cyclic number.

It is not a de Polignac number, because 4449693257 - 2² = 4449693253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4449693199 and 4449693208.

It is not a weakly prime, because it can be changed into another prime (4449693253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2224846628 + 2224846629.

It is an arithmetic number, because the mean of its divisors is an integer number (2224846629).

Almost surely, 2^4449693257 is an apocalyptic number.

It is an amenable number.

4449693257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4449693257 is an equidigital number, since it uses as much as digits as its factorization.

4449693257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 53.

The square root of 4449693257 is about 66706.0211450211. The cubic root of 4449693257 is about 1644.7883625082.

The spelling of 4449693257 in words is "four billion, four hundred forty-nine million, six hundred ninety-three thousand, two hundred fifty-seven".