8213944 has 16 divisors (see below), whose sum is σ = 16071120. Its totient is φ = 3928320.

The previous prime is 8213897. The next prime is 8213951. The reversal of 8213944 is 4493128.

8213944 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22137 + ... + 22504.

It is an arithmetic number, because the mean of its divisors is an integer number (1004445).

Almost surely, 2^8213944 is an apocalyptic number.

It is an amenable number.

8213944 is a deficient number, since it is larger than the sum of its proper divisors (7857176).

8213944 is a wasteful number, since it uses less digits than its factorization.

8213944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44670 (or 44666 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 8213944 is about 2865.9979064891. The cubic root of 8213944 is about 201.7672055968.

The spelling of 8213944 in words is "eight million, two hundred thirteen thousand, nine hundred forty-four".