3927481 has 4 divisors (see below), whose sum is σ = 3971700. Its totient is φ = 3883264.

The previous prime is 3927479. The next prime is 3927523. The reversal of 3927481 is 1847293.

3927481 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1847293 = 7 ⋅263899.

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 3686400 = 491^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 3927481 - 2¹ = 3927479 is a prime.

It is a super-2 number, since 2×3927481² = 30850214010722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3907481) 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, 21976 + ... + 22153.

It is an arithmetic number, because the mean of its divisors is an integer number (992925).

Almost surely, 2^3927481 is an apocalyptic number.

It is an amenable number.

3927481 is a deficient number, since it is larger than the sum of its proper divisors (44219).

3927481 is an equidigital number, since it uses as much as digits as its factorization.

3927481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44218.

The product of its digits is 12096, while the sum is 34.

The square root of 3927481 is about 1981.7873246138. The cubic root of 3927481 is about 157.7749426228.

The spelling of 3927481 in words is "three million, nine hundred twenty-seven thousand, four hundred eighty-one".