9896551 has 4 divisors (see below), whose sum is σ = 11310352. Its totient is φ = 8482752.

The previous prime is 9896543. The next prime is 9896563. The reversal of 9896551 is 1556989.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9896551 - 2³ = 9896543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9896498 and 9896507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9896521) 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 3 ways as a sum of consecutive naturals, for example, 706890 + ... + 706903.

It is an arithmetic number, because the mean of its divisors is an integer number (2827588).

Almost surely, 2^9896551 is an apocalyptic number.

9896551 is a deficient number, since it is larger than the sum of its proper divisors (1413801).

9896551 is a wasteful number, since it uses less digits than its factorization.

9896551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413800.

The product of its digits is 97200, while the sum is 43.

The square root of 9896551 is about 3145.8784146880. The cubic root of 9896551 is about 214.6979786743.

The spelling of 9896551 in words is "nine million, eight hundred ninety-six thousand, five hundred fifty-one".