891959041 has 4 divisors (see below), whose sum is σ = 904177732. Its totient is φ = 879740352.

The previous prime is 891959039. The next prime is 891959083. The reversal of 891959041 is 140959198.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 624800016 + 267159025 = 24996^2 + 16345^2 .

It is a cyclic number.

It is not a de Polignac number, because 891959041 - 2¹ = 891959039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 891958982 and 891959000.

It is not an unprimeable number, because it can be changed into a prime (891959441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6109236 + ... + 6109381.

It is an arithmetic number, because the mean of its divisors is an integer number (226044433).

Almost surely, 2^891959041 is an apocalyptic number.

It is an amenable number.

891959041 is a deficient number, since it is larger than the sum of its proper divisors (12218691).

891959041 is a wasteful number, since it uses less digits than its factorization.

891959041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12218690.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 891959041 is about 29865.6833338867. The cubic root of 891959041 is about 962.6054228935.

The spelling of 891959041 in words is "eight hundred ninety-one million, nine hundred fifty-nine thousand, forty-one".