858149029 has 8 divisors (see below), whose sum is σ = 881710200. Its totient is φ = 834607296.

The previous prime is 858149011. The next prime is 858149051. The reversal of 858149029 is 920941858.

It can be written as a sum of positive squares in 4 ways, for example, as 329241025 + 528908004 = 18145^2 + 22998^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-858149029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 858149029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858140029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158247 + ... + 163579.

It is an arithmetic number, because the mean of its divisors is an integer number (110213775).

Almost surely, 2^858149029 is an apocalyptic number.

It is an amenable number.

858149029 is a deficient number, since it is larger than the sum of its proper divisors (23561171).

858149029 is a wasteful number, since it uses less digits than its factorization.

858149029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 858149029 is about 29294.1808043850. The cubic root of 858149029 is about 950.2857972995.

The spelling of 858149029 in words is "eight hundred fifty-eight million, one hundred forty-nine thousand, twenty-nine".