844214139 has 12 divisors (see below), whose sum is σ = 1228323096. Its totient is φ = 558700512.

The previous prime is 844214131. The next prime is 844214159. The reversal of 844214139 is 931412448.

It is a happy number.

It is not a de Polignac number, because 844214139 - 2³ = 844214131 is a prime.

It is a super-2 number, since 2×844214139² = 1425395024975022642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (844214131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341109 + ... + 343574.

It is an arithmetic number, because the mean of its divisors is an integer number (102360258).

Almost surely, 2^844214139 is an apocalyptic number.

844214139 is a deficient number, since it is larger than the sum of its proper divisors (384108957).

844214139 is a wasteful number, since it uses less digits than its factorization.

844214139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684826 (or 684823 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 844214139 is about 29055.3633431076. The cubic root of 844214139 is about 945.1140233624.

The spelling of 844214139 in words is "eight hundred forty-four million, two hundred fourteen thousand, one hundred thirty-nine".