869828490 has 64 divisors (see below), whose sum is σ = 2420409600. Its totient is φ = 221867712.

The previous prime is 869828459. The next prime is 869828537. The reversal of 869828490 is 94828968.

869828490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63825 + ... + 76244.

It is an arithmetic number, because the mean of its divisors is an integer number (37818900).

Almost surely, 2^869828490 is an apocalyptic number.

869828490 is an abundant number, since it is smaller than the sum of its proper divisors (1550581110).

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

869828490 is a wasteful number, since it uses less digits than its factorization.

869828490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140108 (or 140102 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 869828490 is about 29492.8548974154. The cubic root of 869828490 is about 954.5775348773.

The spelling of 869828490 in words is "eight hundred sixty-nine million, eight hundred twenty-eight thousand, four hundred ninety".