208593923 has 16 divisors (see below), whose sum is σ = 221928960. Its totient is φ = 195649344.

The previous prime is 208593919. The next prime is 208593971. The reversal of 208593923 is 329395802.

It is not a de Polignac number, because 208593923 - 2² = 208593919 is a prime.

It is a super-2 number, since 2×208593923² = 87022849425059858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208593023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474938 + ... + 475376.

It is an arithmetic number, because the mean of its divisors is an integer number (13870560).

Almost surely, 2^208593923 is an apocalyptic number.

208593923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

208593923 is a deficient number, since it is larger than the sum of its proper divisors (13335037).

208593923 is a wasteful number, since it uses less digits than its factorization.

208593923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 208593923 is about 14442.7809995167. The cubic root of 208593923 is about 593.0626183346.

The spelling of 208593923 in words is "two hundred eight million, five hundred ninety-three thousand, nine hundred twenty-three".