4045961 has 2 divisors, whose sum is σ = 4045962. Its totient is φ = 4045960.

The previous prime is 4045933. The next prime is 4045963. The reversal of 4045961 is 1695404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2560000 + 1485961 = 1600^2 + 1219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4045961 is a prime.

Together with 4045963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4045963) 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, 2022980 + 2022981.

It is an arithmetic number, because the mean of its divisors is an integer number (2022981).

Almost surely, 2^4045961 is an apocalyptic number.

It is an amenable number.

4045961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045961 is an equidigital number, since it uses as much as digits as its factorization.

4045961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 4045961 is about 2011.4574318141. The cubic root of 4045961 is about 159.3457791359.

The spelling of 4045961 in words is "four million, forty-five thousand, nine hundred sixty-one".