1191879 has 24 divisors (see below), whose sum is σ = 1895712. Its totient is φ = 717120.

The previous prime is 1191847. The next prime is 1191899. The reversal of 1191879 is 9781911.

It is not a de Polignac number, because 1191879 - 2⁵ = 1191847 is a prime.

It is a super-3 number, since 3×1191879³ = 5079462500167333317, which contains 333 as substring.

1191879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7054 + ... + 7220.

It is an arithmetic number, because the mean of its divisors is an integer number (78988).

2^1191879 is an apocalyptic number.

1191879 is a deficient number, since it is larger than the sum of its proper divisors (703833).

1191879 is a wasteful number, since it uses less digits than its factorization.

1191879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 244 counting only the distinct ones).

The product of its digits is 4536, while the sum is 36.

The square root of 1191879 is about 1091.7321099977. The cubic root of 1191879 is about 106.0255960497.

The spelling of 1191879 in words is "one million, one hundred ninety-one thousand, eight hundred seventy-nine".