1206047449 has 4 divisors (see below), whose sum is σ = 1238643364. Its totient is φ = 1173451536.

The previous prime is 1206047443. The next prime is 1206047459. The reversal of 1206047449 is 9447406021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 929823049 + 276224400 = 30493^2 + 16620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206047449 - 2¹⁵ = 1206014681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 32595877 = 1206047449 / (1 + 2 + 0 + 6 + 0 + 4 + 7 + 4 + 4 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206047443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16297902 + ... + 16297975.

It is an arithmetic number, because the mean of its divisors is an integer number (309660841).

Almost surely, 2^1206047449 is an apocalyptic number.

It is an amenable number.

1206047449 is a deficient number, since it is larger than the sum of its proper divisors (32595915).

1206047449 is an equidigital number, since it uses as much as digits as its factorization.

1206047449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32595914.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1206047449 is about 34728.1938632000. The cubic root of 1206047449 is about 1064.4406825995.

The spelling of 1206047449 in words is "one billion, two hundred six million, forty-seven thousand, four hundred forty-nine".