8121938 has 16 divisors (see below), whose sum is σ = 13720320. Its totient is φ = 3572400.

The previous prime is 8121923. The next prime is 8121947. The reversal of 8121938 is 8391218.

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, 5273 + ... + 6636.

It is an arithmetic number, because the mean of its divisors is an integer number (857520).

Almost surely, 2^8121938 is an apocalyptic number.

8121938 is a deficient number, since it is larger than the sum of its proper divisors (5598382).

8121938 is a wasteful number, since it uses less digits than its factorization.

8121938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11953.

The product of its digits is 3456, while the sum is 32.

The square root of 8121938 is about 2849.9014018032. The cubic root of 8121938 is about 201.0110304747.

The spelling of 8121938 in words is "eight million, one hundred twenty-one thousand, nine hundred thirty-eight".