891062442 has 12 divisors (see below), whose sum is σ = 1930635330. Its totient is φ = 297020808.

The previous prime is 891062423. The next prime is 891062443. The reversal of 891062442 is 244260198.

It can be written as a sum of positive squares in only one way, i.e., 572118561 + 318943881 = 23919^2 + 17859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 891062397 and 891062406.

It is not an unprimeable number, because it can be changed into a prime (891062443) 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 5 ways as a sum of consecutive naturals, for example, 24751717 + ... + 24751752.

Almost surely, 2^891062442 is an apocalyptic number.

891062442 is an abundant number, since it is smaller than the sum of its proper divisors (1039572888).

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

891062442 is a wasteful number, since it uses less digits than its factorization.

891062442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49503477 (or 49503474 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 891062442 is about 29850.6690377285. The cubic root of 891062442 is about 962.2827771334.

The spelling of 891062442 in words is "eight hundred ninety-one million, sixty-two thousand, four hundred forty-two".