209452983 has 8 divisors (see below), whose sum is σ = 281833200. Its totient is φ = 138354048.

The previous prime is 209452981. The next prime is 209453011. The reversal of 209452983 is 389254902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 209452983 - 2¹ = 209452981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209452981) 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, 319938 + ... + 320591.

It is an arithmetic number, because the mean of its divisors is an integer number (35229150).

Almost surely, 2^209452983 is an apocalyptic number.

209452983 is a deficient number, since it is larger than the sum of its proper divisors (72380217).

209452983 is a wasteful number, since it uses less digits than its factorization.

209452983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640641.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 209452983 is about 14472.4905596791. The cubic root of 209452983 is about 593.8756470860.

The spelling of 209452983 in words is "two hundred nine million, four hundred fifty-two thousand, nine hundred eighty-three".