1279562449 has 8 divisors (see below), whose sum is σ = 1416721248. Its totient is φ = 1145876160.

The previous prime is 1279562423. The next prime is 1279562483. The reversal of 1279562449 is 9442659721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1279562449 - 2⁹ = 1279561937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1279562419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867352 + ... + 868825.

It is an arithmetic number, because the mean of its divisors is an integer number (177090156).

Almost surely, 2^1279562449 is an apocalyptic number.

It is an amenable number.

1279562449 is a deficient number, since it is larger than the sum of its proper divisors (137158799).

1279562449 is a wasteful number, since it uses less digits than its factorization.

1279562449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736255.

The product of its digits is 1088640, while the sum is 49.

The square root of 1279562449 is about 35770.9721562051. The cubic root of 1279562449 is about 1085.6433141899.

The spelling of 1279562449 in words is "one billion, two hundred seventy-nine million, five hundred sixty-two thousand, four hundred forty-nine".