449575613 has 2 divisors, whose sum is σ = 449575614. Its totient is φ = 449575612.

The previous prime is 449575573. The next prime is 449575639. The reversal of 449575613 is 316575944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419512324 + 30063289 = 20482^2 + 5483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449575613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449575213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224787806 + 224787807.

It is an arithmetic number, because the mean of its divisors is an integer number (224787807).

Almost surely, 2^449575613 is an apocalyptic number.

It is an amenable number.

449575613 is a deficient number, since it is larger than the sum of its proper divisors (1).

449575613 is an equidigital number, since it uses as much as digits as its factorization.

449575613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 449575613 is about 21203.1981785767. The cubic root of 449575613 is about 766.0684590243.

It can be divided in two parts, 4495 and 75613, that added together give a palindrome (80108).

The spelling of 449575613 in words is "four hundred forty-nine million, five hundred seventy-five thousand, six hundred thirteen".