659043449 has 8 divisors (see below), whose sum is σ = 688150080. Its totient is φ = 629974576.

The previous prime is 659043419. The next prime is 659043457. The reversal of 659043449 is 944340956.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 659043449 - 2⁸ = 659043193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659043419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29747 + ... + 46935.

It is an arithmetic number, because the mean of its divisors is an integer number (86018760).

Almost surely, 2^659043449 is an apocalyptic number.

It is an amenable number.

659043449 is a deficient number, since it is larger than the sum of its proper divisors (29106631).

659043449 is a wasteful number, since it uses less digits than its factorization.

659043449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18879.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 659043449 is about 25671.8415584079. The cubic root of 659043449 is about 870.2379447810.

The spelling of 659043449 in words is "six hundred fifty-nine million, forty-three thousand, four hundred forty-nine".