209492423 has 8 divisors (see below), whose sum is σ = 252021120. Its totient is φ = 170114040.

The previous prime is 209492419. The next prime is 209492467. The reversal of 209492423 is 324294902.

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

It is a cyclic number.

It is not a de Polignac number, because 209492423 - 2² = 209492419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209492473) 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, 787433 + ... + 787698.

It is an arithmetic number, because the mean of its divisors is an integer number (31502640).

Almost surely, 2^209492423 is an apocalyptic number.

209492423 is a deficient number, since it is larger than the sum of its proper divisors (42528697).

209492423 is a wasteful number, since it uses less digits than its factorization.

209492423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575157.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 209492423 is about 14473.8530806417. The cubic root of 209492423 is about 593.9129203445.

The spelling of 209492423 in words is "two hundred nine million, four hundred ninety-two thousand, four hundred twenty-three".