1093990 has 16 divisors (see below), whose sum is σ = 2033280. Its totient is φ = 423360.

The previous prime is 1093969. The next prime is 1093991. The reversal of 1093990 is 993901.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1093991) 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, 1455 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (127080).

2^1093990 is an apocalyptic number.

1093990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1093990 is a deficient number, since it is larger than the sum of its proper divisors (939290).

1093990 is a wasteful number, since it uses less digits than its factorization.

1093990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 1093990 is about 1045.9397688204. The cubic root of 1093990 is about 103.0396680086.

The spelling of 1093990 in words is "one million, ninety-three thousand, nine hundred ninety".