1095990 has 64 divisors (see below), whose sum is σ = 3193344. Its totient is φ = 235008.

The previous prime is 1095989. The next prime is 1096031. The reversal of 1095990 is 995901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3417 + ... + 3723.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2^1095990 is an apocalyptic number.

1095990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1095990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596672).

1095990 is an abundant number, since it is smaller than the sum of its proper divisors (2097354).

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

1095990 is a wasteful number, since it uses less digits than its factorization.

1095990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 3645, while the sum is 33.

The square root of 1095990 is about 1046.8954102488. The cubic root of 1095990 is about 103.1024211358.

It can be divided in two parts, 10959 and 90, that multiplied together give a triangular number (986310 = T₁₄₀₄).

The spelling of 1095990 in words is "one million, ninety-five thousand, nine hundred ninety".