209380041 has 24 divisors (see below), whose sum is σ = 344864520. Its totient is φ = 121268736.

The previous prime is 209380027. The next prime is 209380049. The reversal of 209380041 is 140083902.

It can be written as a sum of positive squares in 4 ways, for example, as 2624400 + 206755641 = 1620^2 + 14379^2 .

It is not a de Polignac number, because 209380041 - 2¹⁴ = 209363657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 209379987 and 209380014.

It is not an unprimeable number, because it can be changed into a prime (209380049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50646 + ... + 54623.

It is an arithmetic number, because the mean of its divisors is an integer number (14369355).

Almost surely, 2^209380041 is an apocalyptic number.

It is an amenable number.

209380041 is a deficient number, since it is larger than the sum of its proper divisors (135484479).

209380041 is a wasteful number, since it uses less digits than its factorization.

209380041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105305 (or 105302 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 209380041 is about 14469.9703178687. The cubic root of 209380041 is about 593.8067000183.

The spelling of 209380041 in words is "two hundred nine million, three hundred eighty thousand, forty-one".