1099423 has 8 divisors (see below), whose sum is σ = 1235808. Its totient is φ = 970464.

The previous prime is 1099421. The next prime is 1099433. The reversal of 1099423 is 3249901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1099423 - 2¹ = 1099421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1099391 and 1099400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540 + ... + 2137.

It is an arithmetic number, because the mean of its divisors is an integer number (154476).

2^1099423 is an apocalyptic number.

1099423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1099423 is a deficient number, since it is larger than the sum of its proper divisors (136385).

1099423 is a wasteful number, since it uses less digits than its factorization.

1099423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1099423 is about 1048.5337381315. The cubic root of 1099423 is about 103.2099591274.

The spelling of 1099423 in words is "one million, ninety-nine thousand, four hundred twenty-three".