854779992 has 128 divisors (see below), whose sum is σ = 2480751360. Its totient is φ = 242565120.

The previous prime is 854779979. The next prime is 854779993. The reversal of 854779992 is 299977458.

854779992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854779993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1269768 + ... + 1270440.

It is an arithmetic number, because the mean of its divisors is an integer number (19380870).

Almost surely, 2^854779992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 854779992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240375680).

854779992 is an abundant number, since it is smaller than the sum of its proper divisors (1625971368).

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

854779992 is a wasteful number, since it uses less digits than its factorization.

854779992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 989 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 60.

The square root of 854779992 is about 29236.6207349618. The cubic root of 854779992 is about 949.0405796839.

The spelling of 854779992 in words is "eight hundred fifty-four million, seven hundred seventy-nine thousand, nine hundred ninety-two".