409379189 has 8 divisors (see below), whose sum is σ = 411452568. Its totient is φ = 407311360.

The previous prime is 409379183. The next prime is 409379207. The reversal of 409379189 is 981973904.

It can be written as a sum of positive squares in 4 ways, for example, as 935089 + 408444100 = 967^2 + 20210^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409379189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409379183) 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, 240389 + ... + 242085.

It is an arithmetic number, because the mean of its divisors is an integer number (51431571).

Almost surely, 2^409379189 is an apocalyptic number.

It is an amenable number.

409379189 is a deficient number, since it is larger than the sum of its proper divisors (2073379).

409379189 is a wasteful number, since it uses less digits than its factorization.

409379189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 409379189 is about 20233.1210889472. The cubic root of 409379189 is about 742.5207370629.

The spelling of 409379189 in words is "four hundred nine million, three hundred seventy-nine thousand, one hundred eighty-nine".