405428189 has 8 divisors (see below), whose sum is σ = 435685248. Its totient is φ = 375883200.

The previous prime is 405428141. The next prime is 405428201. The reversal of 405428189 is 981824504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405428189 - 2¹⁶ = 405362653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405428489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176837 + ... + 179114.

It is an arithmetic number, because the mean of its divisors is an integer number (54460656).

Almost surely, 2^405428189 is an apocalyptic number.

It is an amenable number.

405428189 is a deficient number, since it is larger than the sum of its proper divisors (30257059).

405428189 is a wasteful number, since it uses less digits than its factorization.

405428189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356035.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 405428189 is about 20135.2474283283. The cubic root of 405428189 is about 740.1242724088.

The spelling of 405428189 in words is "four hundred five million, four hundred twenty-eight thousand, one hundred eighty-nine".