3935881 has 4 divisors (see below), whose sum is σ = 3972100. Its totient is φ = 3899664.

The previous prime is 3935879. The next prime is 3935887. The reversal of 3935881 is 1885393.

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 3575881 + 360000 = 1891^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 3935881 - 2¹ = 3935879 is a prime.

It is a super-2 number, since 2×3935881² = 30982318492322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3935881.

It is not an unprimeable number, because it can be changed into a prime (3935887) 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, 17946 + ... + 18163.

It is an arithmetic number, because the mean of its divisors is an integer number (993025).

Almost surely, 2^3935881 is an apocalyptic number.

It is an amenable number.

3935881 is a deficient number, since it is larger than the sum of its proper divisors (36219).

3935881 is a wasteful number, since it uses less digits than its factorization.

3935881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36218.

The product of its digits is 25920, while the sum is 37.

The square root of 3935881 is about 1983.9054917007. The cubic root of 3935881 is about 157.8873442523.

The spelling of 3935881 in words is "three million, nine hundred thirty-five thousand, eight hundred eighty-one".