9921954 has 32 divisors (see below), whose sum is σ = 22778496. Its totient is φ = 2822400.

The previous prime is 9921917. The next prime is 9921983. The reversal of 9921954 is 4591299.

9921954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13804 + ... + 14504.

It is an arithmetic number, because the mean of its divisors is an integer number (711828).

Almost surely, 2^9921954 is an apocalyptic number.

9921954 is an abundant number, since it is smaller than the sum of its proper divisors (12856542).

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

9921954 is a wasteful number, since it uses less digits than its factorization.

9921954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050.

The product of its digits is 29160, while the sum is 39.

The square root of 9921954 is about 3149.9133321411. The cubic root of 9921954 is about 214.8815211657.

The spelling of 9921954 in words is "nine million, nine hundred twenty-one thousand, nine hundred fifty-four".