3891016 has 8 divisors (see below), whose sum is σ = 7295670. Its totient is φ = 1945504.

The previous prime is 3890981. The next prime is 3891037. The reversal of 3891016 is 6101983.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3818116 + 72900 = 1954^2 + 270^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243181 + ... + 243196.

Almost surely, 2^3891016 is an apocalyptic number.

It is an amenable number.

3891016 is a deficient number, since it is larger than the sum of its proper divisors (3404654).

3891016 is a wasteful number, since it uses less digits than its factorization.

3891016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486383 (or 486379 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 3891016 is about 1972.5658417401. The cubic root of 3891016 is about 157.2851323826.

Adding to 3891016 its reverse (6101983), we get a palindrome (9992999).

The spelling of 3891016 in words is "three million, eight hundred ninety-one thousand, sixteen".