3942216 has 32 divisors (see below), whose sum is σ = 10951200. Its totient is φ = 1314000.

The previous prime is 3942209. The next prime is 3942217. The reversal of 3942216 is 6122493.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 3942216.

It is not an unprimeable number, because it can be changed into a prime (3942217) 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, 8910 + ... + 9341.

It is an arithmetic number, because the mean of its divisors is an integer number (342225).

Almost surely, 2^3942216 is an apocalyptic number.

3942216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3942216 is an abundant number, since it is smaller than the sum of its proper divisors (7008984).

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

3942216 is a wasteful number, since it uses less digits than its factorization.

3942216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18266 (or 18256 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 3942216 is about 1985.5014479975. The cubic root of 3942216 is about 157.9720080732.

The spelling of 3942216 in words is "three million, nine hundred forty-two thousand, two hundred sixteen".