1219279 has 2 divisors, whose sum is σ = 1219280. Its totient is φ = 1219278.

The previous prime is 1219271. The next prime is 1219297. The reversal of 1219279 is 9729121.

Together with next prime (1219297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1219279 - 2³ = 1219271 is a prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1219279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1219271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609639 + 609640.

It is an arithmetic number, because the mean of its divisors is an integer number (609640).

2^1219279 is an apocalyptic number.

1219279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219279 is an equidigital number, since it uses as much as digits as its factorization.

1219279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 31.

The square root of 1219279 is about 1104.2096721185. The cubic root of 1219279 is about 106.8319194151.

It can be divided in two parts, 12 and 19279, that added together give a palindrome (19291).

The spelling of 1219279 in words is "one million, two hundred nineteen thousand, two hundred seventy-nine".