1171099 has 4 divisors (see below), whose sum is σ = 1196064. Its totient is φ = 1146136.

The previous prime is 1171073. The next prime is 1171109. The reversal of 1171099 is 9901711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9901711 = 571 ⋅17341.

It is a cyclic number.

It is not a de Polignac number, because 1171099 - 2⁷ = 1170971 is a prime.

It is a Duffinian number.

1171099 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12412 + ... + 12505.

It is an arithmetic number, because the mean of its divisors is an integer number (299016).

2^1171099 is an apocalyptic number.

1171099 is a deficient number, since it is larger than the sum of its proper divisors (24965).

1171099 is an equidigital number, since it uses as much as digits as its factorization.

1171099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24964.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 1171099 is about 1082.1732763287. The cubic root of 1171099 is about 105.4058067798.

The spelling of 1171099 in words is "one million, one hundred seventy-one thousand, ninety-nine".