3896881 has 8 divisors (see below), whose sum is σ = 4121280. Its totient is φ = 3674448.

The previous prime is 3896861. The next prime is 3896887. The reversal of 3896881 is 1886983.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3896881 - 2⁹ = 3896369 is a prime.

It is a super-2 number, since 2×3896881² = 30371363056322, which contains 22 as substring.

It is a Duffinian number.

3896881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3896887) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 5700 + ... + 6346.

It is an arithmetic number, because the mean of its divisors is an integer number (515160).

Almost surely, 2^3896881 is an apocalyptic number.

3896881 is the 1249-th centered pentagonal number.

It is an amenable number.

3896881 is a deficient number, since it is larger than the sum of its proper divisors (224399).

3896881 is a wasteful number, since it uses less digits than its factorization.

3896881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983.

The product of its digits is 82944, while the sum is 43.

The square root of 3896881 is about 1974.0519243424. The cubic root of 3896881 is about 157.3641189678.

The spelling of 3896881 in words is "three million, eight hundred ninety-six thousand, eight hundred eighty-one".