891392448 has 56 divisors (see below), whose sum is σ = 2482616320. Its totient is φ = 281491200.

The previous prime is 891392443. The next prime is 891392479. The reversal of 891392448 is 844293198.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 891392397 and 891392406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891392443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 118528 + ... + 125823.

Almost surely, 2^891392448 is an apocalyptic number.

It is an amenable number.

891392448 is an abundant number, since it is smaller than the sum of its proper divisors (1591223872).

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

891392448 is a wasteful number, since it uses less digits than its factorization.

891392448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244385 (or 244375 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 891392448 is about 29856.1961408348. The cubic root of 891392448 is about 962.4015566489.

The spelling of 891392448 in words is "eight hundred ninety-one million, three hundred ninety-two thousand, four hundred forty-eight".