3907121 has 2 divisors, whose sum is σ = 3907122. Its totient is φ = 3907120.

The previous prime is 3907097. The next prime is 3907133. The reversal of 3907121 is 1217093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2217121 + 1690000 = 1489^2 + 1300^2 .

It is an emirp because it is prime and its reverse (1217093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3907121 - 2¹⁴ = 3890737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3907021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953560 + 1953561.

It is an arithmetic number, because the mean of its divisors is an integer number (1953561).

Almost surely, 2^3907121 is an apocalyptic number.

It is an amenable number.

3907121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3907121 is an equidigital number, since it uses as much as digits as its factorization.

3907121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 3907121 is about 1976.6438728309. The cubic root of 3907121 is about 157.5018358735.

The spelling of 3907121 in words is "three million, nine hundred seven thousand, one hundred twenty-one".