889938658 has 16 divisors (see below), whose sum is σ = 1534748544. Its totient is φ = 379117440.

The previous prime is 889938653. The next prime is 889938659. The reversal of 889938658 is 856839988.

It is a self number, because there is not a number n which added to its sum of digits gives 889938658.

It is not an unprimeable number, because it can be changed into a prime (889938653) 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, 187983 + ... + 192658.

It is an arithmetic number, because the mean of its divisors is an integer number (95921784).

Almost surely, 2^889938658 is an apocalyptic number.

889938658 is a deficient number, since it is larger than the sum of its proper divisors (644809886).

889938658 is a wasteful number, since it uses less digits than its factorization.

889938658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380817.

The product of its digits is 29859840, while the sum is 64.

The square root of 889938658 is about 29831.8396683812. The cubic root of 889938658 is about 961.8780718939.

The spelling of 889938658 in words is "eight hundred eighty-nine million, nine hundred thirty-eight thousand, six hundred fifty-eight".