1179881 has 4 divisors (see below), whose sum is σ = 1242000. Its totient is φ = 1117764.

The previous prime is 1179869. The next prime is 1179883. The reversal of 1179881 is 1889711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1889711 = 59 ⋅32029.

It is a cyclic number.

It is not a de Polignac number, because 1179881 - 2¹⁸ = 917737 is a prime.

It is a super-2 number, since 2×1179881² = 2784238348322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1179883) 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 3 ways as a sum of consecutive naturals, for example, 31031 + ... + 31068.

It is an arithmetic number, because the mean of its divisors is an integer number (310500).

2^1179881 is an apocalyptic number.

It is an amenable number.

1179881 is a deficient number, since it is larger than the sum of its proper divisors (62119).

1179881 is an equidigital number, since it uses as much as digits as its factorization.

1179881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62118.

The product of its digits is 4032, while the sum is 35.

The square root of 1179881 is about 1086.2232735492. The cubic root of 1179881 is about 105.6686281495.

The spelling of 1179881 in words is "one million, one hundred seventy-nine thousand, eight hundred eighty-one".