891490608 has 60 divisors (see below), whose sum is σ = 2641703688. Its totient is φ = 279682560.

The previous prime is 891490573. The next prime is 891490627. The reversal of 891490608 is 806094198.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179638 + ... + 184533.

Almost surely, 2^891490608 is an apocalyptic number.

It is an amenable number.

891490608 is an abundant number, since it is smaller than the sum of its proper divisors (1750213080).

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

891490608 is a wasteful number, since it uses less digits than its factorization.

891490608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364202 (or 364193 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 891490608 is about 29857.8399754570. The cubic root of 891490608 is about 962.4368818564.

The spelling of 891490608 in words is "eight hundred ninety-one million, four hundred ninety thousand, six hundred eight".