1099854 has 72 divisors (see below), whose sum is σ = 2934360. Its totient is φ = 296352.

The previous prime is 1099843. The next prime is 1099859. The reversal of 1099854 is 4589901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099859) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25557 + ... + 25599.

It is an arithmetic number, because the mean of its divisors is an integer number (40755).

2^1099854 is an apocalyptic number.

1099854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467180).

1099854 is an abundant number, since it is smaller than the sum of its proper divisors (1834506).

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

1099854 is a wasteful number, since it uses less digits than its factorization.

1099854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1099854 is about 1048.7392430914. The cubic root of 1099854 is about 103.2234442861.

It can be divided in two parts, 1099 and 854, that added together give a triangular number (1953 = T₆₂).

The spelling of 1099854 in words is "one million, ninety-nine thousand, eight hundred fifty-four".