881937989 has 2 divisors, whose sum is σ = 881937990. Its totient is φ = 881937988.

The previous prime is 881937983. The next prime is 881938009. The reversal of 881937989 is 989739188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717329089 + 164608900 = 26783^2 + 12830^2 .

It is a cyclic number.

It is not a de Polignac number, because 881937989 - 2⁸ = 881937733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881937983) 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, 440968994 + 440968995.

It is an arithmetic number, because the mean of its divisors is an integer number (440968995).

Almost surely, 2^881937989 is an apocalyptic number.

It is an amenable number.

881937989 is a deficient number, since it is larger than the sum of its proper divisors (1).

881937989 is an equidigital number, since it uses as much as digits as its factorization.

881937989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 62.

The square root of 881937989 is about 29697.4407819933. The cubic root of 881937989 is about 958.9869191991.

The spelling of 881937989 in words is "eight hundred eighty-one million, nine hundred thirty-seven thousand, nine hundred eighty-nine".