209471083 has 2 divisors, whose sum is σ = 209471084. Its totient is φ = 209471082.

The previous prime is 209471081. The next prime is 209471113. The reversal of 209471083 is 380174902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 209471083 - 2¹ = 209471081 is a prime.

It is a super-2 number, since 2×209471083² = 87756269226385778, which contains 22 as substring.

Together with 209471081, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (209471081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104735541 + 104735542.

It is an arithmetic number, because the mean of its divisors is an integer number (104735542).

Almost surely, 2^209471083 is an apocalyptic number.

209471083 is a deficient number, since it is larger than the sum of its proper divisors (1).

209471083 is an equidigital number, since it uses as much as digits as its factorization.

209471083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 209471083 is about 14473.1158704683. The cubic root of 209471083 is about 593.8927532951.

The spelling of 209471083 in words is "two hundred nine million, four hundred seventy-one thousand, eighty-three".