896528981 has 4 divisors (see below), whose sum is σ = 920759532. Its totient is φ = 872298432.

The previous prime is 896528957. The next prime is 896528993. The reversal of 896528981 is 189825698.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 189825698 = 2 ⋅94912849.

It can be written as a sum of positive squares in 2 ways, for example, as 418407025 + 478121956 = 20455^2 + 21866^2 .

It is a cyclic number.

It is not a de Polignac number, because 896528981 - 2¹⁴ = 896512597 is a prime.

It is a super-2 number, since 2×896528981² = 1607528427545796722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (896528911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12115220 + ... + 12115293.

It is an arithmetic number, because the mean of its divisors is an integer number (230189883).

Almost surely, 2^896528981 is an apocalyptic number.

It is an amenable number.

896528981 is a deficient number, since it is larger than the sum of its proper divisors (24230551).

896528981 is a wasteful number, since it uses less digits than its factorization.

896528981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24230550.

The product of its digits is 2488320, while the sum is 56.

The square root of 896528981 is about 29942.0937978626. The cubic root of 896528981 is about 964.2465885051.

The spelling of 896528981 in words is "eight hundred ninety-six million, five hundred twenty-eight thousand, nine hundred eighty-one".