16952209 has 8 divisors (see below), whose sum is σ = 17343720. Its totient is φ = 16563456.

The previous prime is 16952207. The next prime is 16952251. The reversal of 16952209 is 90225961.

It can be written as a sum of positive squares in 4 ways, for example, as 305809 + 16646400 = 553^2 + 4080^2 .

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 16952209 - 2¹ = 16952207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16952203) 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, 16297 + ... + 17305.

It is an arithmetic number, because the mean of its divisors is an integer number (2167965).

Almost surely, 2^16952209 is an apocalyptic number.

It is an amenable number.

16952209 is a deficient number, since it is larger than the sum of its proper divisors (391511).

16952209 is a wasteful number, since it uses less digits than its factorization.

16952209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 16952209 is about 4117.3060367187. The cubic root of 16952209 is about 256.8869836722.

It can be divided in two parts, 16952 and 209, that added together give a square (17161 = 131²).

The spelling of 16952209 in words is "sixteen million, nine hundred fifty-two thousand, two hundred nine".