881289397 has 4 divisors (see below), whose sum is σ = 885466336. Its totient is φ = 877112460.

The previous prime is 881289379. The next prime is 881289403. The reversal of 881289397 is 793982188.

881289397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881289397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881289377) 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, 2088153 + ... + 2088574.

It is an arithmetic number, because the mean of its divisors is an integer number (221366584).

Almost surely, 2^881289397 is an apocalyptic number.

It is an amenable number.

881289397 is a deficient number, since it is larger than the sum of its proper divisors (4176939).

881289397 is a wasteful number, since it uses less digits than its factorization.

881289397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176938.

The product of its digits is 1741824, while the sum is 55.

The square root of 881289397 is about 29686.5187753633. The cubic root of 881289397 is about 958.7517765215.

The spelling of 881289397 in words is "eight hundred eighty-one million, two hundred eighty-nine thousand, three hundred ninety-seven".