1338919 has 4 divisors (see below), whose sum is σ = 1375144. Its totient is φ = 1302696.

The previous prime is 1338907. The next prime is 1338923. The reversal of 1338919 is 9198331.

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

It is not a de Polignac number, because 1338919 - 2⁷ = 1338791 is a prime.

It is a super-2 number, since 2×1338919² = 3585408177122, which contains 22 as substring.

It is a Duffinian number.

1338919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338979) 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, 18057 + ... + 18130.

It is an arithmetic number, because the mean of its divisors is an integer number (343786).

2^1338919 is an apocalyptic number.

1338919 is a deficient number, since it is larger than the sum of its proper divisors (36225).

1338919 is an equidigital number, since it uses as much as digits as its factorization.

1338919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36224.

The product of its digits is 5832, while the sum is 34.

The square root of 1338919 is about 1157.1166751888. The cubic root of 1338919 is about 110.2177230463.

The spelling of 1338919 in words is "one million, three hundred thirty-eight thousand, nine hundred nineteen".