2208929 has 4 divisors (see below), whose sum is σ = 2338884. Its totient is φ = 2078976.

The previous prime is 2208893. The next prime is 2208931. The reversal of 2208929 is 9298022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1254400 + 954529 = 1120^2 + 977^2 .

It is a cyclic number.

It is not a de Polignac number, because 2208929 - 2¹² = 2204833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2208895 and 2208904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64952 + ... + 64985.

It is an arithmetic number, because the mean of its divisors is an integer number (584721).

2^2208929 is an apocalyptic number.

It is an amenable number.

2208929 is a deficient number, since it is larger than the sum of its proper divisors (129955).

2208929 is a wasteful number, since it uses less digits than its factorization.

2208929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129954.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2208929 is about 1486.2466147985. The cubic root of 2208929 is about 130.2348614337.

The spelling of 2208929 in words is "two million, two hundred eight thousand, nine hundred twenty-nine".