829449870 has 32 divisors (see below), whose sum is σ = 1992090240. Its totient is φ = 221029920.

The previous prime is 829449869. The next prime is 829449877. The reversal of 829449870 is 78944928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (829449877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36901 + ... + 54959.

It is an arithmetic number, because the mean of its divisors is an integer number (62252820).

Almost surely, 2^829449870 is an apocalyptic number.

829449870 is an abundant number, since it is smaller than the sum of its proper divisors (1162640370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

829449870 is a wasteful number, since it uses less digits than its factorization.

829449870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19600.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 829449870 is about 28800.1713536569. The cubic root of 829449870 is about 939.5719606929.

The spelling of 829449870 in words is "eight hundred twenty-nine million, four hundred forty-nine thousand, eight hundred seventy".