1260434449 has 4 divisors (see below), whose sum is σ = 1272914100. Its totient is φ = 1247954800.

The previous prime is 1260434437. The next prime is 1260434467. The reversal of 1260434449 is 9444340621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9444340621 = 19 ⋅497070559.

It can be written as a sum of positive squares in 2 ways, for example, as 1133534224 + 126900225 = 33668^2 + 11265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1260434449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1260434419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6239674 + ... + 6239875.

It is an arithmetic number, because the mean of its divisors is an integer number (318228525).

Almost surely, 2^1260434449 is an apocalyptic number.

It is an amenable number.

1260434449 is a deficient number, since it is larger than the sum of its proper divisors (12479651).

1260434449 is a wasteful number, since it uses less digits than its factorization.

1260434449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12479650.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 1260434449 is about 35502.5977781908. The cubic root of 1260434449 is about 1080.2064217350.

The spelling of 1260434449 in words is "one billion, two hundred sixty million, four hundred thirty-four thousand, four hundred forty-nine".