3926281 has 4 divisors (see below), whose sum is σ = 4061700. Its totient is φ = 3790864.

The previous prime is 3926249. The next prime is 3926291. The reversal of 3926281 is 1826293.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2624400 + 1301881 = 1620^2 + 1141^2 .

It is a cyclic number.

It is not a de Polignac number, because 3926281 - 2⁵ = 3926249 is a prime.

It is a super-2 number, since 2×3926281² = 30831364981922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3926231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67666 + ... + 67723.

It is an arithmetic number, because the mean of its divisors is an integer number (1015425).

Almost surely, 2^3926281 is an apocalyptic number.

It is an amenable number.

3926281 is a deficient number, since it is larger than the sum of its proper divisors (135419).

3926281 is a wasteful number, since it uses less digits than its factorization.

3926281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135418.

The product of its digits is 5184, while the sum is 31.

The square root of 3926281 is about 1981.4845444767. The cubic root of 3926281 is about 157.7588721681.

The spelling of 3926281 in words is "three million, nine hundred twenty-six thousand, two hundred eighty-one".