434340187 has 2 divisors, whose sum is σ = 434340188. Its totient is φ = 434340186.

The previous prime is 434340173. The next prime is 434340217. The reversal of 434340187 is 781043434.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434340187 is a prime.

It is not a weakly prime, because it can be changed into another prime (434340787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217170093 + 217170094.

It is an arithmetic number, because the mean of its divisors is an integer number (217170094).

Almost surely, 2^434340187 is an apocalyptic number.

434340187 is a deficient number, since it is larger than the sum of its proper divisors (1).

434340187 is an equidigital number, since it uses as much as digits as its factorization.

434340187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 434340187 is about 20840.8298059362. The cubic root of 434340187 is about 757.3151960525.

The spelling of 434340187 in words is "four hundred thirty-four million, three hundred forty thousand, one hundred eighty-seven".