9921934 has 8 divisors (see below), whose sum is σ = 16235928. Its totient is φ = 4509960.

The previous prime is 9921917. The next prime is 9921983. The reversal of 9921934 is 4391299.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9921893 and 9921902.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 225477 + ... + 225520.

It is an arithmetic number, because the mean of its divisors is an integer number (2029491).

Almost surely, 2^9921934 is an apocalyptic number.

9921934 is a deficient number, since it is larger than the sum of its proper divisors (6313994).

9921934 is a wasteful number, since it uses less digits than its factorization.

9921934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451010.

The product of its digits is 17496, while the sum is 37.

The square root of 9921934 is about 3149.9101574489. The cubic root of 9921934 is about 214.8813767844.

It can be divided in two parts, 992 and 1934, that added together give a triangular number (2926 = T₇₆).

The spelling of 9921934 in words is "nine million, nine hundred twenty-one thousand, nine hundred thirty-four".