409140203 has 2 divisors, whose sum is σ = 409140204. Its totient is φ = 409140202.

The previous prime is 409140197. The next prime is 409140229. The reversal of 409140203 is 302041904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409140203 - 2⁴ = 409140187 is a prime.

It is not a weakly prime, because it can be changed into another prime (409140233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204570101 + 204570102.

It is an arithmetic number, because the mean of its divisors is an integer number (204570102).

Almost surely, 2^409140203 is an apocalyptic number.

409140203 is a deficient number, since it is larger than the sum of its proper divisors (1).

409140203 is an equidigital number, since it uses as much as digits as its factorization.

409140203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 409140203 is about 20227.2144152377. The cubic root of 409140203 is about 742.3762201882.

The spelling of 409140203 in words is "four hundred nine million, one hundred forty thousand, two hundred three".