9891952 has 20 divisors (see below), whose sum is σ = 21903856. Its totient is φ = 4239360.

The previous prime is 9891923. The next prime is 9891953. The reversal of 9891952 is 2591989.

It is a junction number, because it is equal to n+sod(n) for n = 9891899 and 9891908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891953) 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, 44049 + ... + 44272.

Almost surely, 2^9891952 is an apocalyptic number.

It is an amenable number.

9891952 is an abundant number, since it is smaller than the sum of its proper divisors (12011904).

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

9891952 is a wasteful number, since it uses less digits than its factorization.

9891952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88336 (or 88330 counting only the distinct ones).

The product of its digits is 58320, while the sum is 43.

The square root of 9891952 is about 3145.1473733356. The cubic root of 9891952 is about 214.6647162784.

The spelling of 9891952 in words is "nine million, eight hundred ninety-one thousand, nine hundred fifty-two".