208842461 has 4 divisors (see below), whose sum is σ = 217922592. Its totient is φ = 199762332.

The previous prime is 208842437. The next prime is 208842503. The reversal of 208842461 is 164248802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 208842461 - 2¹⁴ = 208826077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208842421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4540031 + ... + 4540076.

It is an arithmetic number, because the mean of its divisors is an integer number (54480648).

Almost surely, 2^208842461 is an apocalyptic number.

It is an amenable number.

208842461 is a deficient number, since it is larger than the sum of its proper divisors (9080131).

208842461 is an equidigital number, since it uses as much as digits as its factorization.

208842461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9080130.

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 208842461 is about 14451.3826674128. The cubic root of 208842461 is about 593.2980679779.

The spelling of 208842461 in words is "two hundred eight million, eight hundred forty-two thousand, four hundred sixty-one".