7939816 has 32 divisors (see below), whose sum is σ = 15984000. Its totient is φ = 3684096.

The previous prime is 7939787. The next prime is 7939817. The reversal of 7939816 is 6189397.

It is a super-2 number, since 2×7939816² = 126081356227712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7939817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10375 + ... + 11113.

It is an arithmetic number, because the mean of its divisors is an integer number (499500).

Almost surely, 2^7939816 is an apocalyptic number.

It is an amenable number.

7939816 is an abundant number, since it is smaller than the sum of its proper divisors (8044184).

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

7939816 is a wasteful number, since it uses less digits than its factorization.

7939816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 837 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 7939816 is about 2817.7679109536. The cubic root of 7939816 is about 199.4972037053.

It can be divided in two parts, 793 and 9816, that added together give a square (10609 = 103²).

The spelling of 7939816 in words is "seven million, nine hundred thirty-nine thousand, eight hundred sixteen".