889790646 has 8 divisors (see below), whose sum is σ = 1779581304. Its totient is φ = 296596880.

The previous prime is 889790633. The next prime is 889790647. The reversal of 889790646 is 646097988.

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

889790646 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889790647) 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, 74149215 + ... + 74149226.

It is an arithmetic number, because the mean of its divisors is an integer number (222447663).

Almost surely, 2^889790646 is an apocalyptic number.

889790646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

889790646 is a wasteful number, since it uses less digits than its factorization.

889790646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148298446.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The square root of 889790646 is about 29829.3587929744. The cubic root of 889790646 is about 961.8247433528.

The spelling of 889790646 in words is "eight hundred eighty-nine million, seven hundred ninety thousand, six hundred forty-six".