4045997 has 2 divisors, whose sum is σ = 4045998. Its totient is φ = 4045996.

The previous prime is 4045973. The next prime is 4046011. The reversal of 4045997 is 7995404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3786916 + 259081 = 1946^2 + 509^2 .

It is a cyclic number.

It is not a de Polignac number, because 4045997 - 2⁶ = 4045933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4045997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4045927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022998 + 2022999.

It is an arithmetic number, because the mean of its divisors is an integer number (2022999).

Almost surely, 2^4045997 is an apocalyptic number.

It is an amenable number.

4045997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045997 is an equidigital number, since it uses as much as digits as its factorization.

4045997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 4045997 is about 2011.4663805294. The cubic root of 4045997 is about 159.3462517415.

The spelling of 4045997 in words is "four million, forty-five thousand, nine hundred ninety-seven".