209055396 has 24 divisors (see below), whose sum is σ = 532141344. Its totient is φ = 63350080.

The previous prime is 209055377. The next prime is 209055397. The reversal of 209055396 is 693550902.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (209055397) 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, 791745 + ... + 792008.

It is an arithmetic number, because the mean of its divisors is an integer number (22172556).

Almost surely, 2^209055396 is an apocalyptic number.

It is an amenable number.

209055396 is an abundant number, since it is smaller than the sum of its proper divisors (323085948).

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

209055396 is a wasteful number, since it uses less digits than its factorization.

209055396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583771 (or 1583769 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 209055396 is about 14458.7480785855. The cubic root of 209055396 is about 593.4996409902.

The spelling of 209055396 in words is "two hundred nine million, fifty-five thousand, three hundred ninety-six".