383816 has 8 divisors (see below), whose sum is σ = 719670. Its totient is φ = 191904.

The previous prime is 383813. The next prime is 383821. The reversal of 383816 is 618383.

383816 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 198916 + 184900 = 446^2 + 430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (383813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23981 + ... + 23996.

2³⁸³⁸¹⁶ is an apocalyptic number.

It is an amenable number.

383816 is a deficient number, since it is larger than the sum of its proper divisors (335854).

383816 is a wasteful number, since it uses less digits than its factorization.

383816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47983 (or 47979 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 383816 is about 619.5288532425. The cubic root of 383816 is about 72.6732124770.

The spelling of 383816 in words is "three hundred eighty-three thousand, eight hundred sixteen".