659438 has 12 divisors (see below), whose sum is σ = 1071648. Its totient is φ = 304200.

The previous prime is 659437. The next prime is 659453. The reversal of 659438 is 834956.

It is a junction number, because it is equal to n+sod(n) for n = 659398 and 659407.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 659438.

It is not an unprimeable number, because it can be changed into a prime (659437) 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, 638 + ... + 1313.

It is an arithmetic number, because the mean of its divisors is an integer number (89304).

2⁶⁵⁹⁴³⁸ is an apocalyptic number.

659438 is a deficient number, since it is larger than the sum of its proper divisors (412210).

659438 is a wasteful number, since it uses less digits than its factorization.

659438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979 (or 1966 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 659438 is about 812.0578797106. The cubic root of 659438 is about 87.0411572562.

The spelling of 659438 in words is "six hundred fifty-nine thousand, four hundred thirty-eight".