209492 has 12 divisors (see below), whose sum is σ = 371616. Its totient is φ = 103320.

The previous prime is 209477. The next prime is 209497. The reversal of 209492 is 294902.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 209492.

It is not an unprimeable number, because it can be changed into a prime (209497) by changing a digit.

209492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17 + ... + 647.

It is an arithmetic number, because the mean of its divisors is an integer number (30968).

2²⁰⁹⁴⁹² is an apocalyptic number.

It is an amenable number.

209492 is a deficient number, since it is larger than the sum of its proper divisors (162124).

209492 is a wasteful number, since it uses less digits than its factorization.

209492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 209492 is about 457.7029604449. The cubic root of 209492 is about 59.3912520608.

The spelling of 209492 in words is "two hundred nine thousand, four hundred ninety-two".