401489 has 16 divisors (see below), whose sum is σ = 492480. Its totient is φ = 322560.

The previous prime is 401477. The next prime is 401507. The reversal of 401489 is 984104.

It is a cyclic number.

It is not a de Polignac number, because 401489 - 2⁴ = 401473 is a prime.

It is a super-2 number, since 2×401489² = 322386834242, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 401489.

It is not an unprimeable number, because it can be changed into a prime (401689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3497 + ... + 3609.

It is an arithmetic number, because the mean of its divisors is an integer number (30780).

2⁴⁰¹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

401489 is a deficient number, since it is larger than the sum of its proper divisors (90991).

401489 is a wasteful number, since it uses less digits than its factorization.

401489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 401489 is about 633.6315964344. The cubic root of 401489 is about 73.7719421449.

The spelling of 401489 in words is "four hundred one thousand, four hundred eighty-nine".