1099969 has 8 divisors (see below), whose sum is σ = 1193472. Its totient is φ = 1007760.

The previous prime is 1099961. The next prime is 1099997. The reversal of 1099969 is 9699901.

1099969 is nontrivially palindromic in base 4.

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

It is not a de Polignac number, because 1099969 - 2³ = 1099961 is a prime.

It is a super-2 number, since 2×1099969² = 2419863601922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099961) by changing a digit.

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, 2262 + ... + 2704.

It is an arithmetic number, because the mean of its divisors is an integer number (149184).

2^1099969 is an apocalyptic number.

It is an amenable number.

1099969 is a deficient number, since it is larger than the sum of its proper divisors (93503).

1099969 is a wasteful number, since it uses less digits than its factorization.

1099969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647.

The product of its (nonzero) digits is 39366, while the sum is 43.

The square root of 1099969 is about 1048.7940693959. The cubic root of 1099969 is about 103.2270418188.

The spelling of 1099969 in words is "one million, ninety-nine thousand, nine hundred sixty-nine".