3953381 has 4 divisors (see below), whose sum is σ = 3958092. Its totient is φ = 3948672.

The previous prime is 3953353. The next prime is 3953393. The reversal of 3953381 is 1833593.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1833593 = 151 ⋅12143.

It can be written as a sum of positive squares in 2 ways, for example, as 1876900 + 2076481 = 1370^2 + 1441^2 .

It is a cyclic number.

It is not a de Polignac number, because 3953381 - 2⁶ = 3953317 is a prime.

It is a super-2 number, since 2×3953381² = 31258442662322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3953281) 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, 716 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (989523).

Almost surely, 2^3953381 is an apocalyptic number.

It is an amenable number.

3953381 is a deficient number, since it is larger than the sum of its proper divisors (4711).

3953381 is a wasteful number, since it uses less digits than its factorization.

3953381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4710.

The product of its digits is 9720, while the sum is 32.

The square root of 3953381 is about 1988.3110923595. The cubic root of 3953381 is about 158.1210016851.

It can be divided in two parts, 3953 and 381, that added together give a palindrome (4334).

The spelling of 3953381 in words is "three million, nine hundred fifty-three thousand, three hundred eighty-one".