1100090 has 16 divisors (see below), whose sum is σ = 2066688. Its totient is φ = 420816.

The previous prime is 1100089. The next prime is 1100093. The reversal of 1100090 is 900011.

1100090 = 35² + 36² + ... + 149².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100093) 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, 2162 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (129168).

2^1100090 is an apocalyptic number.

1100090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1100090 is a deficient number, since it is larger than the sum of its proper divisors (966598).

1100090 is a wasteful number, since it uses less digits than its factorization.

1100090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1100090 is about 1048.8517531091. The cubic root of 1100090 is about 103.2308267783.

The spelling of 1100090 in words is "one million, one hundred thousand, ninety".