834640029 has 12 divisors (see below), whose sum is σ = 1211652000. Its totient is φ = 553629384.

The previous prime is 834640021. The next prime is 834640061. The reversal of 834640029 is 920046438.

It is a happy number.

834640029 is a `hidden beast` number, since 8 + 3 + 4 + 640 + 0 + 2 + 9 = 666.

It is not a de Polignac number, because 834640029 - 2³ = 834640021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 834639975 and 834640002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834640021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231219 + ... + 234800.

It is an arithmetic number, because the mean of its divisors is an integer number (100971000).

Almost surely, 2^834640029 is an apocalyptic number.

It is an amenable number.

834640029 is a deficient number, since it is larger than the sum of its proper divisors (377011971).

834640029 is a wasteful number, since it uses less digits than its factorization.

834640029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466224 (or 466221 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 834640029 is about 28890.1372270884. The cubic root of 834640029 is about 941.5276311011.

The spelling of 834640029 in words is "eight hundred thirty-four million, six hundred forty thousand, twenty-nine".