1447856749 has 2 divisors, whose sum is σ = 1447856750. Its totient is φ = 1447856748.

The previous prime is 1447856747. The next prime is 1447856797. The reversal of 1447856749 is 9476587441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1118434249 + 329422500 = 33443^2 + 18150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1447856749 - 2¹ = 1447856747 is a prime.

Together with 1447856747, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1447856749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447856743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723928374 + 723928375.

It is an arithmetic number, because the mean of its divisors is an integer number (723928375).

Almost surely, 2^1447856749 is an apocalyptic number.

It is an amenable number.

1447856749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447856749 is an equidigital number, since it uses as much as digits as its factorization.

1447856749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The square root of 1447856749 is about 38050.7128579742. The cubic root of 1447856749 is about 1131.2932563295.

The spelling of 1447856749 in words is "one billion, four hundred forty-seven million, eight hundred fifty-six thousand, seven hundred forty-nine".