881391049 has 32 divisors (see below), whose sum is σ = 1115652096. Its totient is φ = 676408320.

The previous prime is 881391031. The next prime is 881391059. The reversal of 881391049 is 940193188.

881391049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 881391049 - 2⁹ = 881390537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 881390996 and 881391014.

It is not an unprimeable number, because it can be changed into a prime (881391059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1887114 + ... + 1887580.

It is an arithmetic number, because the mean of its divisors is an integer number (34864128).

Almost surely, 2^881391049 is an apocalyptic number.

It is an amenable number.

881391049 is a deficient number, since it is larger than the sum of its proper divisors (234261047).

881391049 is a wasteful number, since it uses less digits than its factorization.

881391049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 881391049 is about 29688.2308162679. The cubic root of 881391049 is about 958.7886373942.

The spelling of 881391049 in words is "eight hundred eighty-one million, three hundred ninety-one thousand, forty-nine".