434905993 has 4 divisors (see below), whose sum is σ = 444159360. Its totient is φ = 425652628.

The previous prime is 434905987. The next prime is 434905997. The reversal of 434905993 is 399509434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 399509434 = 2 ⋅199754717.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434905993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (434905997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4626613 + ... + 4626706.

It is an arithmetic number, because the mean of its divisors is an integer number (111039840).

Almost surely, 2^434905993 is an apocalyptic number.

It is an amenable number.

434905993 is a deficient number, since it is larger than the sum of its proper divisors (9253367).

434905993 is an equidigital number, since it uses as much as digits as its factorization.

434905993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9253366.

The product of its (nonzero) digits is 524880, while the sum is 46.

The square root of 434905993 is about 20854.3998475142. The cubic root of 434905993 is about 757.6438996555.

The spelling of 434905993 in words is "four hundred thirty-four million, nine hundred five thousand, nine hundred ninety-three".