4087481 has 2 divisors, whose sum is σ = 4087482. Its totient is φ = 4087480.

The previous prime is 4087477. The next prime is 4087487. The reversal of 4087481 is 1847804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3610000 + 477481 = 1900^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 4087481 - 2² = 4087477 is a prime.

It is a super-2 number, since 2×4087481² = 33415001850722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4087487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043740 + 2043741.

It is an arithmetic number, because the mean of its divisors is an integer number (2043741).

Almost surely, 2^4087481 is an apocalyptic number.

It is an amenable number.

4087481 is a deficient number, since it is larger than the sum of its proper divisors (1).

4087481 is an equidigital number, since it uses as much as digits as its factorization.

4087481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 4087481 is about 2021.7519630261. The cubic root of 4087481 is about 159.8889985304. Note that the first 3 decimals are identical.

The spelling of 4087481 in words is "four million, eighty-seven thousand, four hundred eighty-one".