9921734 has 12 divisors (see below), whose sum is σ = 15242436. Its totient is φ = 4843692.

The previous prime is 9921733. The next prime is 9921797. The reversal of 9921734 is 4371299.

9921734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9921694 and 9921703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9921731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2357 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (1270203).

Almost surely, 2^9921734 is an apocalyptic number.

9921734 is a deficient number, since it is larger than the sum of its proper divisors (5320702).

9921734 is a wasteful number, since it uses less digits than its factorization.

9921734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2728 counting only the distinct ones).

The product of its digits is 13608, while the sum is 35.

The square root of 9921734 is about 3149.8784103517. The cubic root of 9921734 is about 214.8799329609.

The spelling of 9921734 in words is "nine million, nine hundred twenty-one thousand, seven hundred thirty-four".