1099505 has 8 divisors (see below), whose sum is σ = 1439424. Its totient is φ = 799600.

The previous prime is 1099499. The next prime is 1099507. The reversal of 1099505 is 5059901.

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

It is not a de Polignac number, because 1099505 - 2⁴ = 1099489 is a prime.

It is a super-2 number, since 2×1099505² = 2417822490050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099507) 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, 9941 + ... + 10050.

It is an arithmetic number, because the mean of its divisors is an integer number (179928).

2^1099505 is an apocalyptic number.

It is an amenable number.

1099505 is a deficient number, since it is larger than the sum of its proper divisors (339919).

1099505 is a wasteful number, since it uses less digits than its factorization.

1099505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20007.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 1099505 is about 1048.5728396254. The cubic root of 1099505 is about 103.2125250207.

The spelling of 1099505 in words is "one million, ninety-nine thousand, five hundred five".