844787146 has 12 divisors (see below), whose sum is σ = 1474067538. Its totient is φ = 362051592.

The previous prime is 844787117. The next prime is 844787147. The reversal of 844787146 is 641787448.

It can be written as a sum of positive squares in only one way, i.e., 524913921 + 319873225 = 22911^2 + 17885^2 .

It is a super-3 number, since 3×844787146³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 844787146.

It is not an unprimeable number, because it can be changed into a prime (844787147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4310041 + ... + 4310236.

Almost surely, 2^844787146 is an apocalyptic number.

844787146 is a deficient number, since it is larger than the sum of its proper divisors (629280392).

844787146 is a wasteful number, since it uses less digits than its factorization.

844787146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620293 (or 8620286 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 49.

The square root of 844787146 is about 29065.2222768036. Note that the first 4 decimals coincide. The cubic root of 844787146 is about 945.3278058006.

The spelling of 844787146 in words is "eight hundred forty-four million, seven hundred eighty-seven thousand, one hundred forty-six".