1099995 has 16 divisors (see below), whose sum is σ = 1895712. Its totient is φ = 541440.

The previous prime is 1099961. The next prime is 1099997. The reversal of 1099995 is 5999901.

It is not a de Polignac number, because 1099995 - 2⁷ = 1099867 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1099997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2626 + ... + 3015.

It is an arithmetic number, because the mean of its divisors is an integer number (118482).

2^1099995 is an apocalyptic number.

1099995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1099995 is a deficient number, since it is larger than the sum of its proper divisors (795717).

1099995 is a wasteful number, since it uses less digits than its factorization.

1099995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662.

The product of its (nonzero) digits is 32805, while the sum is 42.

The square root of 1099995 is about 1048.8064645110. The cubic root of 1099995 is about 103.2278551393.

The spelling of 1099995 in words is "one million, ninety-nine thousand, nine hundred ninety-five".