868829144 has 8 divisors (see below), whose sum is σ = 1629054660. Its totient is φ = 434414568.

The previous prime is 868829113. The next prime is 868829189. The reversal of 868829144 is 441928868.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 868829092 and 868829101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54301814 + ... + 54301829.

Almost surely, 2^868829144 is an apocalyptic number.

It is an amenable number.

868829144 is a deficient number, since it is larger than the sum of its proper divisors (760225516).

868829144 is a wasteful number, since it uses less digits than its factorization.

868829144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108603649 (or 108603645 counting only the distinct ones).

The product of its digits is 884736, while the sum is 50.

The square root of 868829144 is about 29475.9078570958. The cubic root of 868829144 is about 954.2118233921.

The spelling of 868829144 in words is "eight hundred sixty-eight million, eight hundred twenty-nine thousand, one hundred forty-four".