4045049 has 2 divisors, whose sum is σ = 4045050. Its totient is φ = 4045048.

The previous prime is 4045009. The next prime is 4045051. The reversal of 4045049 is 9405404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2699449 + 1345600 = 1643^2 + 1160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4045049 is a prime.

It is a Sophie Germain prime.

Together with 4045051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4045009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022524 + 2022525.

It is an arithmetic number, because the mean of its divisors is an integer number (2022525).

Almost surely, 2^4045049 is an apocalyptic number.

It is an amenable number.

4045049 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045049 is an equidigital number, since it uses as much as digits as its factorization.

4045049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4045049 is about 2011.2307177447. The cubic root of 4045049 is about 159.3338055264. Note that the first 3 decimals are identical.

The spelling of 4045049 in words is "four million, forty-five thousand, forty-nine".