208397001 has 16 divisors (see below), whose sum is σ = 284076800. Its totient is φ = 135854928.

The previous prime is 208396957. The next prime is 208397003. The reversal of 208397001 is 100793802.

It is a happy number.

It is not a de Polignac number, because 208397001 - 2¹⁹ = 207872713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208397001.

It is not an unprimeable number, because it can be changed into a prime (208397003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24210 + ... + 31668.

It is an arithmetic number, because the mean of its divisors is an integer number (17754800).

Almost surely, 2^208397001 is an apocalyptic number.

It is an amenable number.

208397001 is a deficient number, since it is larger than the sum of its proper divisors (75679799).

208397001 is a wasteful number, since it uses less digits than its factorization.

208397001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7668.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 208397001 is about 14435.9620739319. The cubic root of 208397001 is about 592.8759336903.

The spelling of 208397001 in words is "two hundred eight million, three hundred ninety-seven thousand, one".