1338621 has 8 divisors (see below), whose sum is σ = 1818720. Its totient is φ = 875472.

The previous prime is 1338587. The next prime is 1338637. The reversal of 1338621 is 1268331.

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

It is not a de Polignac number, because 1338621 - 2⁹ = 1338109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1338591 and 1338600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4051 + ... + 4368.

It is an arithmetic number, because the mean of its divisors is an integer number (227340).

2^1338621 is an apocalyptic number.

It is an amenable number.

1338621 is a deficient number, since it is larger than the sum of its proper divisors (480099).

1338621 is an equidigital number, since it uses as much as digits as its factorization.

1338621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475.

The product of its digits is 864, while the sum is 24.

The square root of 1338621 is about 1156.9878996774. The cubic root of 1338621 is about 110.2095454746.

The spelling of 1338621 in words is "one million, three hundred thirty-eight thousand, six hundred twenty-one".