4000901 has 2 divisors, whose sum is σ = 4000902. Its totient is φ = 4000900.

The previous prime is 4000897. The next prime is 4000907. The reversal of 4000901 is 1090004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3996001 + 4900 = 1999^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000901 - 2² = 4000897 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000450 + 2000451.

It is an arithmetic number, because the mean of its divisors is an integer number (2000451).

Almost surely, 2^4000901 is an apocalyptic number.

It is an amenable number.

4000901 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000901 is an equidigital number, since it uses as much as digits as its factorization.

4000901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 4000901 is about 2000.2252373170. The cubic root of 4000901 is about 158.7520230383.

Adding to 4000901 its reverse (1090004), we get a palindrome (5090905).

The spelling of 4000901 in words is "four million, nine hundred one", and thus it is an aban number.