881138839 has 8 divisors (see below), whose sum is σ = 1023524768. Its totient is φ = 742880160.

The previous prime is 881138837. The next prime is 881138879. The reversal of 881138839 is 938831188.

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

It is a cyclic number.

It is not a de Polignac number, because 881138839 - 2¹ = 881138837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 881138792 and 881138801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881138837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031352 + ... + 1032205.

It is an arithmetic number, because the mean of its divisors is an integer number (127940596).

Almost surely, 2^881138839 is an apocalyptic number.

881138839 is a deficient number, since it is larger than the sum of its proper divisors (142385929).

881138839 is a wasteful number, since it uses less digits than its factorization.

881138839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063625.

The product of its digits is 331776, while the sum is 49.

The square root of 881138839 is about 29683.9828695544. The cubic root of 881138839 is about 958.6971762312.

The spelling of 881138839 in words is "eight hundred eighty-one million, one hundred thirty-eight thousand, eight hundred thirty-nine".