401338189 has 4 divisors (see below), whose sum is σ = 458672224. Its totient is φ = 344004156.

The previous prime is 401338187. The next prime is 401338213. The reversal of 401338189 is 981833104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401338189 - 2¹ = 401338187 is a prime.

It is a super-2 number, since 2×401338189² = 322144683899599442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401338181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28667007 + ... + 28667020.

It is an arithmetic number, because the mean of its divisors is an integer number (114668056).

Almost surely, 2^401338189 is an apocalyptic number.

It is an amenable number.

401338189 is a deficient number, since it is larger than the sum of its proper divisors (57334035).

401338189 is an equidigital number, since it uses as much as digits as its factorization.

401338189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57334034.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 401338189 is about 20033.4267912407. The cubic root of 401338189 is about 737.6270402236.

The spelling of 401338189 in words is "four hundred one million, three hundred thirty-eight thousand, one hundred eighty-nine".