5209906 has 8 divisors (see below), whose sum is σ = 8416044. Its totient is φ = 2404560.

The previous prime is 5209901. The next prime is 5209913. The reversal of 5209906 is 6099025.

It can be written as a sum of positive squares in 2 ways, for example, as 3980025 + 1229881 = 1995^2 + 1109^2 .

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

It is not an unprimeable number, because it can be changed into a prime (5209901) 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, 100165 + ... + 100216.

Almost surely, 2^5209906 is an apocalyptic number.

5209906 is a deficient number, since it is larger than the sum of its proper divisors (3206138).

5209906 is a wasteful number, since it uses less digits than its factorization.

5209906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200396.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 5209906 is about 2282.5218509359. The cubic root of 5209906 is about 173.3577636505.

The spelling of 5209906 in words is "five million, two hundred nine thousand, nine hundred six".