881380397 has 2 divisors, whose sum is σ = 881380398. Its totient is φ = 881380396.

The previous prime is 881380393. The next prime is 881380411. The reversal of 881380397 is 793083188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881258596 + 121801 = 29686^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 881380397 - 2² = 881380393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881380393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440690198 + 440690199.

It is an arithmetic number, because the mean of its divisors is an integer number (440690199).

Almost surely, 2^881380397 is an apocalyptic number.

It is an amenable number.

881380397 is a deficient number, since it is larger than the sum of its proper divisors (1).

881380397 is an equidigital number, since it uses as much as digits as its factorization.

881380397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 881380397 is about 29688.0514180369. The cubic root of 881380397 is about 958.7847749173.

The spelling of 881380397 in words is "eight hundred eighty-one million, three hundred eighty thousand, three hundred ninety-seven".