449226391 has 2 divisors, whose sum is σ = 449226392. Its totient is φ = 449226390.

The previous prime is 449226347. The next prime is 449226403. The reversal of 449226391 is 193622944.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 449226391 - 2¹³ = 449218199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449226331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224613195 + 224613196.

It is an arithmetic number, because the mean of its divisors is an integer number (224613196).

Almost surely, 2^449226391 is an apocalyptic number.

449226391 is a deficient number, since it is larger than the sum of its proper divisors (1).

449226391 is an equidigital number, since it uses as much as digits as its factorization.

449226391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 449226391 is about 21194.9614531379. The cubic root of 449226391 is about 765.8700517176.

The spelling of 449226391 in words is "four hundred forty-nine million, two hundred twenty-six thousand, three hundred ninety-one".