868989388 has 12 divisors (see below), whose sum is σ = 1521542232. Its totient is φ = 434263040.

The previous prime is 868989371. The next prime is 868989389. The reversal of 868989388 is 883989868.

It is a super-2 number, since 2×868989388² = 1510285112913229088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (868989389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49333 + ... + 64588.

It is an arithmetic number, because the mean of its divisors is an integer number (126795186).

Almost surely, 2^868989388 is an apocalyptic number.

It is an amenable number.

868989388 is a deficient number, since it is larger than the sum of its proper divisors (652552844).

868989388 is a wasteful number, since it uses less digits than its factorization.

868989388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115832 (or 115830 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 67.

The square root of 868989388 is about 29478.6259516959. The cubic root of 868989388 is about 954.2704836864.

The spelling of 868989388 in words is "eight hundred sixty-eight million, nine hundred eighty-nine thousand, three hundred eighty-eight".