4000361 has 2 divisors, whose sum is σ = 4000362. Its totient is φ = 4000360.

The previous prime is 4000357. The next prime is 4000379. The reversal of 4000361 is 1630004.

4000361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 361 = 2000^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000361 - 2² = 4000357 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4000301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000180 + 2000181.

It is an arithmetic number, because the mean of its divisors is an integer number (2000181).

Almost surely, 2^4000361 is an apocalyptic number.

It is an amenable number.

4000361 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000361 is an equidigital number, since it uses as much as digits as its factorization.

4000361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 4000361 is about 2000.0902479638. The cubic root of 4000361 is about 158.7448804847.

Adding to 4000361 its reverse (1630004), we get a palindrome (5630365).

The spelling of 4000361 in words is "four million, three hundred sixty-one", and thus it is an aban number.