434321999 has 2 divisors, whose sum is σ = 434322000. Its totient is φ = 434321998.

The previous prime is 434321977. The next prime is 434322023. The reversal of 434321999 is 999123434.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434321999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434321959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217160999 + 217161000.

It is an arithmetic number, because the mean of its divisors is an integer number (217161000).

Almost surely, 2^434321999 is an apocalyptic number.

434321999 is a deficient number, since it is larger than the sum of its proper divisors (1).

434321999 is an equidigital number, since it uses as much as digits as its factorization.

434321999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 434321999 is about 20840.3934463820. The cubic root of 434321999 is about 757.3046250443.

The spelling of 434321999 in words is "four hundred thirty-four million, three hundred twenty-one thousand, nine hundred ninety-nine".