844730849 has 4 divisors (see below), whose sum is σ = 848419860. Its totient is φ = 841041840.

The previous prime is 844730839. The next prime is 844730863. The reversal of 844730849 is 948037448.

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 624000400 + 220730449 = 24980^2 + 14857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-844730849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844730819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844162 + ... + 1844619.

It is an arithmetic number, because the mean of its divisors is an integer number (212104965).

Almost surely, 2^844730849 is an apocalyptic number.

It is an amenable number.

844730849 is a deficient number, since it is larger than the sum of its proper divisors (3689011).

844730849 is a wasteful number, since it uses less digits than its factorization.

844730849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689010.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 844730849 is about 29064.2538008462. The cubic root of 844730849 is about 945.3068063090.

The spelling of 844730849 in words is "eight hundred forty-four million, seven hundred thirty thousand, eight hundred forty-nine".