9981934 has 16 divisors (see below), whose sum is σ = 15740208. Its totient is φ = 4741632.

The previous prime is 9981929. The next prime is 9981943. The reversal of 9981934 is 4391899.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1614 + ... + 4750.

It is an arithmetic number, because the mean of its divisors is an integer number (983763).

Almost surely, 2^9981934 is an apocalyptic number.

9981934 is a deficient number, since it is larger than the sum of its proper divisors (5758274).

9981934 is a wasteful number, since it uses less digits than its factorization.

9981934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219.

The product of its digits is 69984, while the sum is 43.

The square root of 9981934 is about 3159.4198834596. The cubic root of 9981934 is about 215.3136507382.

The spelling of 9981934 in words is "nine million, nine hundred eighty-one thousand, nine hundred thirty-four".