869889830 has 32 divisors (see below), whose sum is σ = 1662094080. Its totient is φ = 326661120.

The previous prime is 869889821. The next prime is 869889833. The reversal of 869889830 is 38988968.

It is a self number, because there is not a number n which added to its sum of digits gives 869889830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869889833) 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, 63275 + ... + 75785.

It is an arithmetic number, because the mean of its divisors is an integer number (51940440).

Almost surely, 2^869889830 is an apocalyptic number.

869889830 is a deficient number, since it is larger than the sum of its proper divisors (792204250).

869889830 is a wasteful number, since it uses less digits than its factorization.

869889830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944.

The product of its (nonzero) digits is 5971968, while the sum is 59.

The square root of 869889830 is about 29493.8947919735. The cubic root of 869889830 is about 954.5999731742.

The spelling of 869889830 in words is "eight hundred sixty-nine million, eight hundred eighty-nine thousand, eight hundred thirty".