9981926 has 8 divisors (see below), whose sum is σ = 15040704. Its totient is φ = 4968360.

The previous prime is 9981919. The next prime is 9981929. The reversal of 9981926 is 6291899.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9981929) by changing a digit.

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, 10745 + ... + 11636.

It is an arithmetic number, because the mean of its divisors is an integer number (1880088).

Almost surely, 2^9981926 is an apocalyptic number.

9981926 is a deficient number, since it is larger than the sum of its proper divisors (5058778).

9981926 is a wasteful number, since it uses less digits than its factorization.

9981926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22606.

The product of its digits is 69984, while the sum is 44.

The square root of 9981926 is about 3159.4186174042. The cubic root of 9981926 is about 215.3135932173.

The spelling of 9981926 in words is "nine million, nine hundred eighty-one thousand, nine hundred twenty-six".