3863281 has 8 divisors (see below), whose sum is σ = 3995624. Its totient is φ = 3732480.

The previous prime is 3863273. The next prime is 3863291. The reversal of 3863281 is 1823683.

It can be written as a sum of positive squares in 4 ways, for example, as 680625 + 3182656 = 825^2 + 1784^2 .

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

It is a 6-Lehmer number, since φ(3863281) divides (3863281-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 3863281 - 2³ = 3863273 is a prime.

It is a super-2 number, since 2×3863281² = 29849880169922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3863201) 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, 6871 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (499453).

Almost surely, 2^3863281 is an apocalyptic number.

It is an amenable number.

3863281 is a deficient number, since it is larger than the sum of its proper divisors (132343).

3863281 is a wasteful number, since it uses less digits than its factorization.

3863281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its digits is 6912, while the sum is 31.

The square root of 3863281 is about 1965.5230855932. The cubic root of 3863281 is about 156.9105336352.

The spelling of 3863281 in words is "three million, eight hundred sixty-three thousand, two hundred eighty-one".