881427397 has 2 divisors, whose sum is σ = 881427398. Its totient is φ = 881427396.

The previous prime is 881427353. The next prime is 881427401. The reversal of 881427397 is 793724188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832553316 + 48874081 = 28854^2 + 6991^2 .

It is a cyclic number.

It is not a de Polignac number, because 881427397 - 2²⁷ = 747209669 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 881427397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881427097) 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, 440713698 + 440713699.

It is an arithmetic number, because the mean of its divisors is an integer number (440713699).

Almost surely, 2^881427397 is an apocalyptic number.

It is an amenable number.

881427397 is a deficient number, since it is larger than the sum of its proper divisors (1).

881427397 is an equidigital number, since it uses as much as digits as its factorization.

881427397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 881427397 is about 29688.8429717293. The cubic root of 881427397 is about 958.8018171552.

The spelling of 881427397 in words is "eight hundred eighty-one million, four hundred twenty-seven thousand, three hundred ninety-seven".