2005397 has 2 divisors, whose sum is σ = 2005398. Its totient is φ = 2005396.

The previous prime is 2005387. The next prime is 2005417. The reversal of 2005397 is 7935002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1976836 + 28561 = 1406^2 + 169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005397 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 (2005387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002698 + 1002699.

It is an arithmetic number, because the mean of its divisors is an integer number (1002699).

2^2005397 is an apocalyptic number.

It is an amenable number.

2005397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005397 is an equidigital number, since it uses as much as digits as its factorization.

2005397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 2005397 is about 1416.1204044854. The cubic root of 2005397 is about 126.1053331002.

The spelling of 2005397 in words is "two million, five thousand, three hundred ninety-seven".