402005189 has 16 divisors (see below), whose sum is σ = 417056640. Its totient is φ = 387322560.

The previous prime is 402005161. The next prime is 402005203. The reversal of 402005189 is 981500204.

It is a cyclic number.

It is not a de Polignac number, because 402005189 - 2²⁰ = 400956613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402005119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684554 + ... + 685140.

It is an arithmetic number, because the mean of its divisors is an integer number (26066040).

Almost surely, 2^402005189 is an apocalyptic number.

It is an amenable number.

402005189 is a deficient number, since it is larger than the sum of its proper divisors (15051451).

402005189 is a wasteful number, since it uses less digits than its factorization.

402005189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

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

The square root of 402005189 is about 20050.0670572445. The cubic root of 402005189 is about 738.0354446932.

The spelling of 402005189 in words is "four hundred two million, five thousand, one hundred eighty-nine".