1219939 has 8 divisors (see below), whose sum is σ = 1417568. Its totient is φ = 1028160.

The previous prime is 1219931. The next prime is 1219949. The reversal of 1219939 is 9399121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1219939 - 2³ = 1219931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1219931) 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 7 ways as a sum of consecutive naturals, for example, 1002 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (177196).

2^1219939 is an apocalyptic number.

1219939 is a deficient number, since it is larger than the sum of its proper divisors (197629).

1219939 is an equidigital number, since it uses as much as digits as its factorization.

1219939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925.

The product of its digits is 4374, while the sum is 34.

The square root of 1219939 is about 1104.5084879710. The cubic root of 1219939 is about 106.8511921023.

The spelling of 1219939 in words is "one million, two hundred nineteen thousand, nine hundred thirty-nine".