208196939 has 4 divisors (see below), whose sum is σ = 211304424. Its totient is φ = 205089456.

The previous prime is 208196903. The next prime is 208196941. The reversal of 208196939 is 939691802.

208196939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 208196939 - 2¹² = 208192843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208196893 and 208196902.

It is not an unprimeable number, because it can be changed into a prime (208196969) 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, 1553642 + ... + 1553775.

It is an arithmetic number, because the mean of its divisors is an integer number (52826106).

Almost surely, 2^208196939 is an apocalyptic number.

208196939 is a deficient number, since it is larger than the sum of its proper divisors (3107485).

208196939 is an equidigital number, since it uses as much as digits as its factorization.

208196939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107484.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 208196939 is about 14429.0311178540. The cubic root of 208196939 is about 592.6861518144.

The spelling of 208196939 in words is "two hundred eight million, one hundred ninety-six thousand, nine hundred thirty-nine".