208401 has 4 divisors (see below), whose sum is σ = 277872. Its totient is φ = 138932.

The previous prime is 208393. The next prime is 208409. The reversal of 208401 is 104802.

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 an interprime number because it is at equal distance from previous prime (208393) and next prime (208409).

It is a cyclic number.

It is not a de Polignac number, because 208401 - 2³ = 208393 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 208401.

It is not an unprimeable number, because it can be changed into a prime (208409) 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, 34731 + ... + 34736.

It is an arithmetic number, because the mean of its divisors is an integer number (69468).

2²⁰⁸⁴⁰¹ is an apocalyptic number.

It is an amenable number.

208401 is a deficient number, since it is larger than the sum of its proper divisors (69471).

208401 is an equidigital number, since it uses as much as digits as its factorization.

208401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69470.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 208401 is about 456.5095836891. The cubic root of 208401 is about 59.2879725964.

The spelling of 208401 in words is "two hundred eight thousand, four hundred one".