449138271377 has 2 divisors, whose sum is σ = 449138271378. Its totient is φ = 449138271376.

The previous prime is 449138271343. The next prime is 449138271383. The reversal of 449138271377 is 773172831944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245975329681 + 203162941696 = 495959^2 + 450736^2 .

It is a cyclic number.

It is not a de Polignac number, because 449138271377 - 2²⁰ = 449137222801 is a prime.

It is a super-2 number, since 2×449138271377² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (449138273377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224569135688 + 224569135689.

It is an arithmetic number, because the mean of its divisors is an integer number (224569135689).

Almost surely, 2^449138271377 is an apocalyptic number.

It is an amenable number.

449138271377 is a deficient number, since it is larger than the sum of its proper divisors (1).

449138271377 is an equidigital number, since it uses as much as digits as its factorization.

449138271377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 56.

The spelling of 449138271377 in words is "four hundred forty-nine billion, one hundred thirty-eight million, two hundred seventy-one thousand, three hundred seventy-seven".