868988739 has 8 divisors (see below), whose sum is σ = 1158788880. Its totient is φ = 579257216.

The previous prime is 868988651. The next prime is 868988767. The reversal of 868988739 is 937889868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868988739 - 2¹⁹ = 868464451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 868988739.

It is not an unprimeable number, because it can be changed into a prime (868988039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35407 + ... + 54695.

It is an arithmetic number, because the mean of its divisors is an integer number (144848610).

Almost surely, 2^868988739 is an apocalyptic number.

868988739 is a deficient number, since it is larger than the sum of its proper divisors (289800141).

868988739 is a wasteful number, since it uses less digits than its factorization.

868988739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34309.

The product of its digits is 41803776, while the sum is 66.

The square root of 868988739 is about 29478.6149437181. The cubic root of 868988739 is about 954.2702461224.

The spelling of 868988739 in words is "eight hundred sixty-eight million, nine hundred eighty-eight thousand, seven hundred thirty-nine".