9802891 has 12 divisors (see below), whose sum is σ = 11713728. Its totient is φ = 8173872.

The previous prime is 9802889. The next prime is 9802921. The reversal of 9802891 is 1982089.

It is not a de Polignac number, because 9802891 - 2¹ = 9802889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9802891.

It is not an unprimeable number, because it can be changed into a prime (9802811) 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 11 ways as a sum of consecutive naturals, for example, 891 + ... + 4516.

It is an arithmetic number, because the mean of its divisors is an integer number (976144).

Almost surely, 2^9802891 is an apocalyptic number.

9802891 is a deficient number, since it is larger than the sum of its proper divisors (1910837).

9802891 is a wasteful number, since it uses less digits than its factorization.

9802891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5458 (or 5451 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 9802891 is about 3130.9568824882. The cubic root of 9802891 is about 214.0185371312.

The spelling of 9802891 in words is "nine million, eight hundred two thousand, eight hundred ninety-one".