834905399 has 2 divisors, whose sum is σ = 834905400. Its totient is φ = 834905398.

The previous prime is 834905381. The next prime is 834905419. The reversal of 834905399 is 993509438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 834905399 - 2²⁴ = 818128183 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (834905339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417452699 + 417452700.

It is an arithmetic number, because the mean of its divisors is an integer number (417452700).

Almost surely, 2^834905399 is an apocalyptic number.

834905399 is a deficient number, since it is larger than the sum of its proper divisors (1).

834905399 is an equidigital number, since it uses as much as digits as its factorization.

834905399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 834905399 is about 28894.7296059333. The cubic root of 834905399 is about 941.6274053366.

The spelling of 834905399 in words is "eight hundred thirty-four million, nine hundred five thousand, three hundred ninety-nine".