6404488273 has 2 divisors, whose sum is σ = 6404488274. Its totient is φ = 6404488272.

The previous prime is 6404488171. The next prime is 6404488301. The reversal of 6404488273 is 3728844046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4781445904 + 1623042369 = 69148^2 + 40287^2 .

It is a cyclic number.

It is not a de Polignac number, because 6404488273 - 2²⁵ = 6370933841 is a prime.

It is not a weakly prime, because it can be changed into another prime (6404488373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202244136 + 3202244137.

It is an arithmetic number, because the mean of its divisors is an integer number (3202244137).

Almost surely, 2^6404488273 is an apocalyptic number.

It is an amenable number.

6404488273 is a deficient number, since it is larger than the sum of its proper divisors (1).

6404488273 is an equidigital number, since it uses as much as digits as its factorization.

6404488273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 46.

The square root of 6404488273 is about 80028.0467898599. The cubic root of 6404488273 is about 1857.0694469824.

The spelling of 6404488273 in words is "six billion, four hundred four million, four hundred eighty-eight thousand, two hundred seventy-three".