835489640 has 32 divisors (see below), whose sum is σ = 1880686080. Its totient is φ = 334047552.

The previous prime is 835489639. The next prime is 835489661. The reversal of 835489640 is 46984538.

835489640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151817 + ... + 157223.

It is an arithmetic number, because the mean of its divisors is an integer number (58771440).

Almost surely, 2^835489640 is an apocalyptic number.

It is an amenable number.

835489640 is an abundant number, since it is smaller than the sum of its proper divisors (1045196440).

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

835489640 is a wasteful number, since it uses less digits than its factorization.

835489640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9281 (or 9277 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 835489640 is about 28904.8376573888. The cubic root of 835489640 is about 941.8469947114.

The spelling of 835489640 in words is "eight hundred thirty-five million, four hundred eighty-nine thousand, six hundred forty".