1273883449 has 2 divisors, whose sum is σ = 1273883450. Its totient is φ = 1273883448.

The previous prime is 1273883437. The next prime is 1273883521. The reversal of 1273883449 is 9443883721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 938993449 + 334890000 = 30643^2 + 18300^2 .

It is a cyclic number.

It is not a de Polignac number, because 1273883449 - 2⁵ = 1273883417 is a prime.

It is a super-2 number, since 2×1273883449² = 3245558083272271202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1273883749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636941724 + 636941725.

It is an arithmetic number, because the mean of its divisors is an integer number (636941725).

Almost surely, 2^1273883449 is an apocalyptic number.

It is an amenable number.

1273883449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273883449 is an equidigital number, since it uses as much as digits as its factorization.

1273883449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The square root of 1273883449 is about 35691.5038769733. The cubic root of 1273883449 is about 1084.0348184987.

The spelling of 1273883449 in words is "one billion, two hundred seventy-three million, eight hundred eighty-three thousand, four hundred forty-nine".