209948492 has 24 divisors (see below), whose sum is σ = 408438912. Its totient is φ = 93772800.

The previous prime is 209948477. The next prime is 209948509. The reversal of 209948492 is 294849902.

It is a super-3 number, since 3×209948492³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63509 + ... + 66732.

It is an arithmetic number, because the mean of its divisors is an integer number (17018288).

Almost surely, 2^209948492 is an apocalyptic number.

It is an amenable number.

209948492 is a deficient number, since it is larger than the sum of its proper divisors (198490420).

209948492 is a wasteful number, since it uses less digits than its factorization.

209948492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130289 (or 130287 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 209948492 is about 14489.5994423586. The cubic root of 209948492 is about 594.3435945515.

The spelling of 209948492 in words is "two hundred nine million, nine hundred forty-eight thousand, four hundred ninety-two".