209384948 has 6 divisors (see below), whose sum is σ = 366423666. Its totient is φ = 104692472.

The previous prime is 209384947. The next prime is 209384969. The reversal of 209384948 is 849483902.

It can be written as a sum of positive squares in only one way, i.e., 147573904 + 61811044 = 12148^2 + 7862^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209384947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26173115 + ... + 26173122.

It is an arithmetic number, because the mean of its divisors is an integer number (61070611).

Almost surely, 2^209384948 is an apocalyptic number.

It is an amenable number.

209384948 is a deficient number, since it is larger than the sum of its proper divisors (157038718).

209384948 is a wasteful number, since it uses less digits than its factorization.

209384948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52346241 (or 52346239 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 209384948 is about 14470.1398749286. The cubic root of 209384948 is about 593.8113387711.

The spelling of 209384948 in words is "two hundred nine million, three hundred eighty-four thousand, nine hundred forty-eight".