200405189 has 2 divisors, whose sum is σ = 200405190. Its totient is φ = 200405188.

The previous prime is 200405147. The next prime is 200405281. The reversal of 200405189 is 981504002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164608900 + 35796289 = 12830^2 + 5983^2 .

It is a cyclic number.

It is not a de Polignac number, because 200405189 - 2⁸ = 200404933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200405119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100202594 + 100202595.

It is an arithmetic number, because the mean of its divisors is an integer number (100202595).

Almost surely, 2^200405189 is an apocalyptic number.

It is an amenable number.

200405189 is a deficient number, since it is larger than the sum of its proper divisors (1).

200405189 is an equidigital number, since it uses as much as digits as its factorization.

200405189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 200405189 is about 14156.4539698330. The cubic root of 200405189 is about 585.1982078503.

The spelling of 200405189 in words is "two hundred million, four hundred five thousand, one hundred eighty-nine".