605444993 has 2 divisors, whose sum is σ = 605444994. Its totient is φ = 605444992.

The previous prime is 605444989. The next prime is 605445011. The reversal of 605444993 is 399444506.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 562306369 + 43138624 = 23713^2 + 6568^2 .

It is a cyclic number.

It is not a de Polignac number, because 605444993 - 2² = 605444989 is a prime.

It is not a weakly prime, because it can be changed into another prime (605444293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302722496 + 302722497.

It is an arithmetic number, because the mean of its divisors is an integer number (302722497).

Almost surely, 2^605444993 is an apocalyptic number.

It is an amenable number.

605444993 is a deficient number, since it is larger than the sum of its proper divisors (1).

605444993 is an equidigital number, since it uses as much as digits as its factorization.

605444993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 605444993 is about 24605.7918588287. The cubic root of 605444993 is about 845.9763665953.

The spelling of 605444993 in words is "six hundred five million, four hundred forty-four thousand, nine hundred ninety-three".