869840418 has 16 divisors (see below), whose sum is σ = 1740015360. Its totient is φ = 289891056.

The previous prime is 869840417. The next prime is 869840423. The reversal of 869840418 is 814048968.

869840418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (869840417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31023 + ... + 51981.

It is an arithmetic number, because the mean of its divisors is an integer number (108750960).

Almost surely, 2^869840418 is an apocalyptic number.

869840418 is an abundant number, since it is smaller than the sum of its proper divisors (870174942).

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

869840418 is a wasteful number, since it uses less digits than its factorization.

869840418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27881.

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 869840418 is about 29493.0571151924. The cubic root of 869840418 is about 954.5818982466.

The spelling of 869840418 in words is "eight hundred sixty-nine million, eight hundred forty thousand, four hundred eighteen".