1338906 has 8 divisors (see below), whose sum is σ = 2677824. Its totient is φ = 446300.

The previous prime is 1338881. The next prime is 1338907. The reversal of 1338906 is 6098331.

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

1338906 is an admirable number.

It is a super-4 number, since 4×1338906⁴ (a number of 26 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338907) 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, 111570 + ... + 111581.

It is an arithmetic number, because the mean of its divisors is an integer number (334728).

2^1338906 is an apocalyptic number.

1338906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1338906 is a wasteful number, since it uses less digits than its factorization.

1338906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223156.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1338906 is about 1157.1110577641. Note that the first 3 decimals coincide. The cubic root of 1338906 is about 110.2173663319.

The spelling of 1338906 in words is "one million, three hundred thirty-eight thousand, nine hundred six".