878144444 has 6 divisors (see below), whose sum is σ = 1536752784. Its totient is φ = 439072220.

The previous prime is 878144441. The next prime is 878144459. The reversal of 878144444 is 444441878.

It is a super-2 number, since 2×878144444² = 1542275329056138272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 878144395 and 878144404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878144441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109768052 + ... + 109768059.

It is an arithmetic number, because the mean of its divisors is an integer number (256125464).

Almost surely, 2^878144444 is an apocalyptic number.

It is an amenable number.

878144444 is a deficient number, since it is larger than the sum of its proper divisors (658608340).

878144444 is a wasteful number, since it uses less digits than its factorization.

878144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219536115 (or 219536113 counting only the distinct ones).

The product of its digits is 458752, while the sum is 44.

The square root of 878144444 is about 29633.5020542628. The cubic root of 878144444 is about 957.6099559455.

The spelling of 878144444 in words is "eight hundred seventy-eight million, one hundred forty-four thousand, four hundred forty-four".