1099970 has 16 divisors (see below), whose sum is σ = 2048760. Its totient is φ = 424704.

The previous prime is 1099961. The next prime is 1099997. The reversal of 1099970 is 799901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 724201 + 375769 = 851^2 + 613^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1099970.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607 + ... + 2186.

2^1099970 is an apocalyptic number.

1099970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1099970 is a deficient number, since it is larger than the sum of its proper divisors (948790).

1099970 is a wasteful number, since it uses less digits than its factorization.

1099970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 1099970 is about 1048.7945461338. The cubic root of 1099970 is about 103.2270731006.

The spelling of 1099970 in words is "one million, ninety-nine thousand, nine hundred seventy".