1391219 has 4 divisors (see below), whose sum is σ = 1397280. Its totient is φ = 1385160.

The previous prime is 1391207. The next prime is 1391233. The reversal of 1391219 is 9121931.

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

It is a cyclic number.

It is not a de Polignac number, because 1391219 - 2¹² = 1387123 is a prime.

It is a super-2 number, since 2×1391219² = 3870980611922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2672 + ... + 3149.

It is an arithmetic number, because the mean of its divisors is an integer number (349320).

2^1391219 is an apocalyptic number.

1391219 is a deficient number, since it is larger than the sum of its proper divisors (6061).

1391219 is an equidigital number, since it uses as much as digits as its factorization.

1391219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060.

The product of its digits is 486, while the sum is 26.

The square root of 1391219 is about 1179.4994701143. The cubic root of 1391219 is about 111.6345176133.

It can be divided in two parts, 13912 and 19, that added together give a palindrome (13931).

The spelling of 1391219 in words is "one million, three hundred ninety-one thousand, two hundred nineteen".