891446480 has 20 divisors (see below), whose sum is σ = 2072613252. Its totient is φ = 356578560.

The previous prime is 891446461. The next prime is 891446597. The reversal of 891446480 is 84644198.

It can be written as a sum of positive squares in 2 ways, for example, as 610682944 + 280763536 = 24712^2 + 16756^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5571461 + ... + 5571620.

Almost surely, 2^891446480 is an apocalyptic number.

891446480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

891446480 is an abundant number, since it is smaller than the sum of its proper divisors (1181166772).

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

891446480 is a wasteful number, since it uses less digits than its factorization.

891446480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11143094 (or 11143088 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 891446480 is about 29857.1009979201. The cubic root of 891446480 is about 962.4210016683.

The spelling of 891446480 in words is "eight hundred ninety-one million, four hundred forty-six thousand, four hundred eighty".