449215213 has 2 divisors, whose sum is σ = 449215214. Its totient is φ = 449215212.

The previous prime is 449215201. The next prime is 449215219. The reversal of 449215213 is 312512944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413430889 + 35784324 = 20333^2 + 5982^2 .

It is a cyclic number.

It is not a de Polignac number, because 449215213 - 2⁵ = 449215181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449215219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224607606 + 224607607.

It is an arithmetic number, because the mean of its divisors is an integer number (224607607).

Almost surely, 2^449215213 is an apocalyptic number.

It is an amenable number.

449215213 is a deficient number, since it is larger than the sum of its proper divisors (1).

449215213 is an equidigital number, since it uses as much as digits as its factorization.

449215213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 449215213 is about 21194.6977567504. The cubic root of 449215213 is about 765.8636993404.

The spelling of 449215213 in words is "four hundred forty-nine million, two hundred fifteen thousand, two hundred thirteen".