449639453 has 2 divisors, whose sum is σ = 449639454. Its totient is φ = 449639452.

The previous prime is 449639447. The next prime is 449639507. The reversal of 449639453 is 354936944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257345764 + 192293689 = 16042^2 + 13867^2 .

It is a cyclic number.

It is not a de Polignac number, because 449639453 - 2¹⁰ = 449638429 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 449639398 and 449639407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449639153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224819726 + 224819727.

It is an arithmetic number, because the mean of its divisors is an integer number (224819727).

Almost surely, 2^449639453 is an apocalyptic number.

It is an amenable number.

449639453 is a deficient number, since it is larger than the sum of its proper divisors (1).

449639453 is an equidigital number, since it uses as much as digits as its factorization.

449639453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 47.

The square root of 449639453 is about 21204.7035584089. The cubic root of 449639453 is about 766.1047180312.

The spelling of 449639453 in words is "four hundred forty-nine million, six hundred thirty-nine thousand, four hundred fifty-three".