203402404099 has 4 divisors (see below), whose sum is σ = 203429688264. Its totient is φ = 203375119936.

The previous prime is 203402404039. The next prime is 203402404157. The reversal of 203402404099 is 990404204302.

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 203402404099 - 2¹¹ = 203402402051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203402404019) 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, 13630897 + ... + 13645810.

It is an arithmetic number, because the mean of its divisors is an integer number (50857422066).

Almost surely, 2^203402404099 is an apocalyptic number.

203402404099 is a deficient number, since it is larger than the sum of its proper divisors (27284165).

203402404099 is an equidigital number, since it uses as much as digits as its factorization.

203402404099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27284164.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 203402404099 in words is "two hundred three billion, four hundred two million, four hundred four thousand, ninety-nine".