209483139 has 8 divisors (see below), whose sum is σ = 279493632. Its totient is φ = 139564040.

The previous prime is 209483137. The next prime is 209483161. The reversal of 209483139 is 931384902.

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 209483139 - 2¹ = 209483137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 209483097 and 209483106.

It is not an unprimeable number, because it can be changed into a prime (209483137) 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, 17307 + ... + 26804.

It is an arithmetic number, because the mean of its divisors is an integer number (34936704).

Almost surely, 2^209483139 is an apocalyptic number.

209483139 is a deficient number, since it is larger than the sum of its proper divisors (70010493).

209483139 is a wasteful number, since it uses less digits than its factorization.

209483139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45697.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 209483139 is about 14473.5323608302. The cubic root of 209483139 is about 593.9041468068.

The spelling of 209483139 in words is "two hundred nine million, four hundred eighty-three thousand, one hundred thirty-nine".