401089 has 4 divisors (see below), whose sum is σ = 431956. Its totient is φ = 370224.

The previous prime is 401087. The next prime is 401101. The reversal of 401089 is 980104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50625 + 350464 = 225^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 401089 - 2¹ = 401087 is a prime.

It is a Duffinian number.

401089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (401087) 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, 15414 + ... + 15439.

It is an arithmetic number, because the mean of its divisors is an integer number (107989).

2⁴⁰¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

401089 is a deficient number, since it is larger than the sum of its proper divisors (30867).

401089 is a wasteful number, since it uses less digits than its factorization.

401089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30866.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 401089 is about 633.3158769524. The cubic root of 401089 is about 73.7474345560.

The spelling of 401089 in words is "four hundred one thousand, eighty-nine".