434330991 has 10 divisors (see below), whose sum is σ = 648815552. Its totient is φ = 289553940.

The previous prime is 434330971. The next prime is 434330993. The reversal of 434330991 is 199033434.

434330991 is a `hidden beast` number, since 4 + 343 + 309 + 9 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-434330991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434330993) 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 in 9 ways as a sum of consecutive naturals, for example, 2680975 + ... + 2681136.

Almost surely, 2^434330991 is an apocalyptic number.

434330991 is a deficient number, since it is larger than the sum of its proper divisors (214484561).

434330991 is an equidigital number, since it uses as much as digits as its factorization.

434330991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362123 (or 5362114 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 434330991 is about 20840.6091801559. The cubic root of 434330991 is about 757.3098513021.

The spelling of 434330991 in words is "four hundred thirty-four million, three hundred thirty thousand, nine hundred ninety-one".