1099429 has 4 divisors (see below), whose sum is σ = 1104460. Its totient is φ = 1094400.

The previous prime is 1099421. The next prime is 1099433. The reversal of 1099429 is 9249901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9249901 = 1373 ⋅6737.

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 240100 = 927^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099429 - 2³ = 1099421 is a prime.

It is a Duffinian number.

1099429 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1099394 and 1099403.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2172 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (276115).

2^1099429 is an apocalyptic number.

It is an amenable number.

1099429 is a deficient number, since it is larger than the sum of its proper divisors (5031).

1099429 is an equidigital number, since it uses as much as digits as its factorization.

1099429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1099429 is about 1048.5365992659. The cubic root of 1099429 is about 103.2101468800.

The spelling of 1099429 in words is "one million, ninety-nine thousand, four hundred twenty-nine".