449486621 has 2 divisors, whose sum is σ = 449486622. Its totient is φ = 449486620.

The previous prime is 449486561. The next prime is 449486633. The reversal of 449486621 is 126684944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427910596 + 21576025 = 20686^2 + 4645^2 .

It is a cyclic number.

It is not a de Polignac number, because 449486621 - 2²⁶ = 382377757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449486641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224743310 + 224743311.

It is an arithmetic number, because the mean of its divisors is an integer number (224743311).

Almost surely, 2^449486621 is an apocalyptic number.

It is an amenable number.

449486621 is a deficient number, since it is larger than the sum of its proper divisors (1).

449486621 is an equidigital number, since it uses as much as digits as its factorization.

449486621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 449486621 is about 21201.0995233738. The cubic root of 449486621 is about 766.0179087860.

The spelling of 449486621 in words is "four hundred forty-nine million, four hundred eighty-six thousand, six hundred twenty-one".