209342466 has 12 divisors (see below), whose sum is σ = 453575382. Its totient is φ = 69780816.

The previous prime is 209342449. The next prime is 209342491. The reversal of 209342466 is 664243902.

It can be written as a sum of positive squares in only one way, i.e., 145805625 + 63536841 = 12075^2 + 7971^2 .

It is a super-2 number, since 2×209342466² = 87648536141922312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 209342466.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5815051 + ... + 5815086.

Almost surely, 2^209342466 is an apocalyptic number.

209342466 is an abundant number, since it is smaller than the sum of its proper divisors (244232916).

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

209342466 is a wasteful number, since it uses less digits than its factorization.

209342466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11630145 (or 11630142 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 209342466 is about 14468.6718809986. The cubic root of 209342466 is about 593.7711766999.

The spelling of 209342466 in words is "two hundred nine million, three hundred forty-two thousand, four hundred sixty-six".