1338945 has 16 divisors (see below), whose sum is σ = 2236032. Its totient is φ = 682880.

The previous prime is 1338941. The next prime is 1338979. The reversal of 1338945 is 5498331.

It is not a de Polignac number, because 1338945 - 2² = 1338941 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1338941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596 + ... + 2285.

It is an arithmetic number, because the mean of its divisors is an integer number (139752).

2^1338945 is an apocalyptic number.

1338945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1338945 is a deficient number, since it is larger than the sum of its proper divisors (897087).

1338945 is a wasteful number, since it uses less digits than its factorization.

1338945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912.

The product of its digits is 12960, while the sum is 33.

The square root of 1338945 is about 1157.1279099564. The cubic root of 1338945 is about 110.2184364682.

The spelling of 1338945 in words is "one million, three hundred thirty-eight thousand, nine hundred forty-five".