844849887 has 16 divisors (see below), whose sum is σ = 1289663232. Its totient is φ = 481919040.

The previous prime is 844849807. The next prime is 844849903. The reversal of 844849887 is 788948448.

It is not a de Polignac number, because 844849887 - 2¹⁴ = 844833503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 844849887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844849807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23238 + ... + 47219.

It is an arithmetic number, because the mean of its divisors is an integer number (80603952).

Almost surely, 2^844849887 is an apocalyptic number.

844849887 is a deficient number, since it is larger than the sum of its proper divisors (444813345).

844849887 is a wasteful number, since it uses less digits than its factorization.

844849887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71038.

The product of its digits is 16515072, while the sum is 60.

The square root of 844849887 is about 29066.3015707193. The cubic root of 844849887 is about 945.3512078863.

The spelling of 844849887 in words is "eight hundred forty-four million, eight hundred forty-nine thousand, eight hundred eighty-seven".