434898839 has 2 divisors, whose sum is σ = 434898840. Its totient is φ = 434898838.

The previous prime is 434898823. The next prime is 434898869. The reversal of 434898839 is 938898434.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 434898839 - 2⁴ = 434898823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434898869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217449419 + 217449420.

It is an arithmetic number, because the mean of its divisors is an integer number (217449420).

Almost surely, 2^434898839 is an apocalyptic number.

434898839 is a deficient number, since it is larger than the sum of its proper divisors (1).

434898839 is an equidigital number, since it uses as much as digits as its factorization.

434898839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 56.

The square root of 434898839 is about 20854.2283242512. The cubic root of 434898839 is about 757.6397453369.

The spelling of 434898839 in words is "four hundred thirty-four million, eight hundred ninety-eight thousand, eight hundred thirty-nine".