3965381 has 8 divisors (see below), whose sum is σ = 4544064. Its totient is φ = 3389760.

The previous prime is 3965371. The next prime is 3965383. The reversal of 3965381 is 1835693.

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

It is a cyclic number.

It is not a de Polignac number, because 3965381 - 2⁶ = 3965317 is a prime.

It is a super-2 number, since 2×3965381² = 31448492950322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965383) 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, 4061 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (568008).

Almost surely, 2^3965381 is an apocalyptic number.

It is an amenable number.

3965381 is a deficient number, since it is larger than the sum of its proper divisors (578683).

3965381 is an equidigital number, since it uses as much as digits as its factorization.

3965381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its digits is 19440, while the sum is 35.

The square root of 3965381 is about 1991.3264423494. The cubic root of 3965381 is about 158.2808256791.

The spelling of 3965381 in words is "three million, nine hundred sixty-five thousand, three hundred eighty-one".