1218079 has 4 divisors (see below), whose sum is σ = 1224400. Its totient is φ = 1211760.

The previous prime is 1218043. The next prime is 1218089. The reversal of 1218079 is 9708121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1218079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2862 + ... + 3259.

It is an arithmetic number, because the mean of its divisors is an integer number (306100).

2^1218079 is an apocalyptic number.

1218079 is a deficient number, since it is larger than the sum of its proper divisors (6321).

1218079 is an equidigital number, since it uses as much as digits as its factorization.

1218079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6320.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1218079 is about 1103.6661632940. Note that the first 3 decimals coincide. The cubic root of 1218079 is about 106.7968603397.

The spelling of 1218079 in words is "one million, two hundred eighteen thousand, seventy-nine".