659493479 has 4 divisors (see below), whose sum is σ = 659848584. Its totient is φ = 659138376.

The previous prime is 659493463. The next prime is 659493481. The reversal of 659493479 is 974394956.

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

It is a cyclic number.

It is not a de Polignac number, because 659493479 - 2⁴ = 659493463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659493449) 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, 174752 + ... + 178485.

It is an arithmetic number, because the mean of its divisors is an integer number (164962146).

Almost surely, 2^659493479 is an apocalyptic number.

659493479 is a deficient number, since it is larger than the sum of its proper divisors (355105).

659493479 is a wasteful number, since it uses less digits than its factorization.

659493479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355104.

The product of its digits is 7348320, while the sum is 56.

The square root of 659493479 is about 25680.6051135872. The cubic root of 659493479 is about 870.4359813313.

The spelling of 659493479 in words is "six hundred fifty-nine million, four hundred ninety-three thousand, four hundred seventy-nine".