401589 has 6 divisors (see below), whose sum is σ = 580086. Its totient is φ = 267720.

The previous prime is 401587. The next prime is 401593. The reversal of 401589 is 985104.

It can be written as a sum of positive squares in only one way, i.e., 400689 + 900 = 633^2 + 30^2 .

It is not a de Polignac number, because 401589 - 2¹ = 401587 is a prime.

It is a super-2 number, since 2×401589² = 322547449842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22302 + ... + 22319.

It is an arithmetic number, because the mean of its divisors is an integer number (96681).

2⁴⁰¹⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

401589 is a deficient number, since it is larger than the sum of its proper divisors (178497).

401589 is a wasteful number, since it uses less digits than its factorization.

401589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44627 (or 44624 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 401589 is about 633.7105017277. The cubic root of 401589 is about 73.7780664985.

It can be divided in two parts, 401 and 589, that added together give a triangular number (990 = T₄₄).

The spelling of 401589 in words is "four hundred one thousand, five hundred eighty-nine".