659438955 has 32 divisors (see below), whose sum is σ = 1339814400. Its totient is φ = 301457376.

The previous prime is 659438953. The next prime is 659438963. The reversal of 659438955 is 559834956.

It is a happy number.

It is not a de Polignac number, because 659438955 - 2¹ = 659438953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (659438953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347965 + ... + 349854.

It is an arithmetic number, because the mean of its divisors is an integer number (41869200).

Almost surely, 2^659438955 is an apocalyptic number.

659438955 is an abundant number, since it is smaller than the sum of its proper divisors (680375445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

659438955 is a wasteful number, since it uses less digits than its factorization.

659438955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697840 (or 697834 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The square root of 659438955 is about 25679.5435122979. The cubic root of 659438955 is about 870.4119927396.

The spelling of 659438955 in words is "six hundred fifty-nine million, four hundred thirty-eight thousand, nine hundred fifty-five".