1089798 has 16 divisors (see below), whose sum is σ = 2238960. Its totient is φ = 353376.

The previous prime is 1089793. The next prime is 1089799. The reversal of 1089798 is 8979801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089793) 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, 2233 + ... + 2676.

It is an arithmetic number, because the mean of its divisors is an integer number (139935).

2^1089798 is an apocalyptic number.

1089798 is an abundant number, since it is smaller than the sum of its proper divisors (1149162).

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

1089798 is a wasteful number, since it uses less digits than its factorization.

1089798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1089798 is about 1043.9339059538. The cubic root of 1089798 is about 102.9078888706.

The spelling of 1089798 in words is "one million, eighty-nine thousand, seven hundred ninety-eight".