209940996 has 12 divisors (see below), whose sum is σ = 489862352. Its totient is φ = 69980328.

The previous prime is 209940989. The next prime is 209941009. The reversal of 209940996 is 699049902.

209940996 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8747530 + ... + 8747553.

Almost surely, 2^209940996 is an apocalyptic number.

It is an amenable number.

209940996 is an abundant number, since it is smaller than the sum of its proper divisors (279921356).

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

209940996 is a wasteful number, since it uses less digits than its factorization.

209940996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17495090 (or 17495088 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 209940996 is about 14489.3407717536. The cubic root of 209940996 is about 594.3365209869.

The spelling of 209940996 in words is "two hundred nine million, nine hundred forty thousand, nine hundred ninety-six".