385489 has 6 divisors (see below), whose sum is σ = 417606. Its totient is φ = 355680.

The previous prime is 385481. The next prime is 385493. The reversal of 385489 is 984583.

385489 = T₂₃₇ + T₂₃₈ + ... + T₂₄₉.

It can be written as a sum of positive squares in 3 ways, for example, as 1089 + 384400 = 33^2 + 620^2 .

It is not a de Polignac number, because 385489 - 2³ = 385481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385481) 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, 972 + ... + 1309.

It is an arithmetic number, because the mean of its divisors is an integer number (69601).

2³⁸⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

385489 is a deficient number, since it is larger than the sum of its proper divisors (32117).

385489 is a wasteful number, since it uses less digits than its factorization.

385489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307 (or 2294 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 385489 is about 620.8776046855. The cubic root of 385489 is about 72.7786502020.

The spelling of 385489 in words is "three hundred eighty-five thousand, four hundred eighty-nine".