405600389 has 2 divisors, whose sum is σ = 405600390. Its totient is φ = 405600388.

The previous prime is 405600383. The next prime is 405600421. The reversal of 405600389 is 983006504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230037889 + 175562500 = 15167^2 + 13250^2 .

It is a cyclic number.

It is not a de Polignac number, because 405600389 - 2¹² = 405596293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405600383) 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, 202800194 + 202800195.

It is an arithmetic number, because the mean of its divisors is an integer number (202800195).

Almost surely, 2^405600389 is an apocalyptic number.

It is an amenable number.

405600389 is a deficient number, since it is larger than the sum of its proper divisors (1).

405600389 is an equidigital number, since it uses as much as digits as its factorization.

405600389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 405600389 is about 20139.5230579078. The cubic root of 405600389 is about 740.2290434166.

The spelling of 405600389 in words is "four hundred five million, six hundred thousand, three hundred eighty-nine".