406020193 has 2 divisors, whose sum is σ = 406020194. Its totient is φ = 406020192.

The previous prime is 406020149. The next prime is 406020211. The reversal of 406020193 is 391020604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403688464 + 2331729 = 20092^2 + 1527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406020193 is a prime.

It is not a weakly prime, because it can be changed into another prime (406020133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203010096 + 203010097.

It is an arithmetic number, because the mean of its divisors is an integer number (203010097).

Almost surely, 2^406020193 is an apocalyptic number.

It is an amenable number.

406020193 is a deficient number, since it is larger than the sum of its proper divisors (1).

406020193 is an equidigital number, since it uses as much as digits as its factorization.

406020193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 406020193 is about 20149.9427542611. The cubic root of 406020193 is about 740.4843390001.

Adding to 406020193 its reverse (391020604), we get a palindrome (797040797).

The spelling of 406020193 in words is "four hundred six million, twenty thousand, one hundred ninety-three".