1339881 has 8 divisors (see below), whose sum is σ = 1834944. Its totient is φ = 869040.

The previous prime is 1339873. The next prime is 1339901. The reversal of 1339881 is 1889331.

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

It is not a de Polignac number, because 1339881 - 2³ = 1339873 is a prime.

It is a super-2 number, since 2×1339881² = 3590562188322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339381) 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, 5925 + ... + 6146.

It is an arithmetic number, because the mean of its divisors is an integer number (229368).

2^1339881 is an apocalyptic number.

It is an amenable number.

1339881 is a deficient number, since it is larger than the sum of its proper divisors (495063).

1339881 is a wasteful number, since it uses less digits than its factorization.

1339881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12111.

The product of its digits is 5184, while the sum is 33.

The square root of 1339881 is about 1157.5322889665. The cubic root of 1339881 is about 110.2441135066.

The spelling of 1339881 in words is "one million, three hundred thirty-nine thousand, eight hundred eighty-one".