881445947 has 2 divisors, whose sum is σ = 881445948. Its totient is φ = 881445946.

The previous prime is 881445919. The next prime is 881445953. The reversal of 881445947 is 749544188.

881445947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 881445947 - 2⁶ = 881445883 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 881445895 and 881445904.

It is not a weakly prime, because it can be changed into another prime (881445907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440722973 + 440722974.

It is an arithmetic number, because the mean of its divisors is an integer number (440722974).

Almost surely, 2^881445947 is an apocalyptic number.

881445947 is a deficient number, since it is larger than the sum of its proper divisors (1).

881445947 is an equidigital number, since it uses as much as digits as its factorization.

881445947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 50.

The square root of 881445947 is about 29689.1553770059. The cubic root of 881445947 is about 958.8085432335.

The spelling of 881445947 in words is "eight hundred eighty-one million, four hundred forty-five thousand, nine hundred forty-seven".