949558649209 has 9 divisors (see below), whose sum is σ = 1002185317317. Its totient is φ = 899564338044.

The previous prime is 949558649197. The next prime is 949558649233. The reversal of 949558649209 is 902946855949.

The square root of 949558649209 is 974453.

It is a perfect power (a square), and thus also a powerful number.

949558649209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 949558649209 - 2²¹ = 949556552057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (949558649609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18488964 + ... + 18540250.

Almost surely, 2^949558649209 is an apocalyptic number.

949558649209 is the 974453-rd square number.

949558649209 is the 487227-th centered octagonal number.

It is an amenable number.

949558649209 is a deficient number, since it is larger than the sum of its proper divisors (52626668108).

949558649209 is an frugal number, since it uses more digits than its factorization.

949558649209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102612 (or 51306 counting only the distinct ones).

The product of its (nonzero) digits is 251942400, while the sum is 70.

The spelling of 949558649209 in words is "nine hundred forty-nine billion, five hundred fifty-eight million, six hundred forty-nine thousand, two hundred nine".