434039387 has 2 divisors, whose sum is σ = 434039388. Its totient is φ = 434039386.

The previous prime is 434039381. The next prime is 434039423. The reversal of 434039387 is 783930434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 434039387 - 2⁸ = 434039131 is a prime.

It is not a weakly prime, because it can be changed into another prime (434039381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217019693 + 217019694.

It is an arithmetic number, because the mean of its divisors is an integer number (217019694).

Almost surely, 2^434039387 is an apocalyptic number.

434039387 is a deficient number, since it is larger than the sum of its proper divisors (1).

434039387 is an equidigital number, since it uses as much as digits as its factorization.

434039387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 434039387 is about 20833.6119528036. The cubic root of 434039387 is about 757.1403308007.

The spelling of 434039387 in words is "four hundred thirty-four million, thirty-nine thousand, three hundred eighty-seven".