869253870 has 32 divisors (see below), whose sum is σ = 2087039520. Its totient is φ = 231708800.

The previous prime is 869253823. The next prime is 869253887. The reversal of 869253870 is 78352968.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107116 + ... + 114944.

It is an arithmetic number, because the mean of its divisors is an integer number (65219985).

Almost surely, 2^869253870 is an apocalyptic number.

869253870 is an abundant number, since it is smaller than the sum of its proper divisors (1217785650).

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

869253870 is a wasteful number, since it uses less digits than its factorization.

869253870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11540.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 869253870 is about 29483.1116064774. Note that the first 3 decimals coincide. The cubic root of 869253870 is about 954.3672864662.

The spelling of 869253870 in words is "eight hundred sixty-nine million, two hundred fifty-three thousand, eight hundred seventy".