881004997 has 2 divisors, whose sum is σ = 881004998. Its totient is φ = 881004996.

The previous prime is 881004947. The next prime is 881005009. The reversal of 881004997 is 799400188.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 871076196 + 9928801 = 29514^2 + 3151^2 .

It is a cyclic number.

It is not a de Polignac number, because 881004997 - 2¹¹ = 881002949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881004947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440502498 + 440502499.

It is an arithmetic number, because the mean of its divisors is an integer number (440502499).

Almost surely, 2^881004997 is an apocalyptic number.

It is an amenable number.

881004997 is a deficient number, since it is larger than the sum of its proper divisors (1).

881004997 is an equidigital number, since it uses as much as digits as its factorization.

881004997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 881004997 is about 29681.7283357961. The cubic root of 881004997 is about 958.6486328238.

The spelling of 881004997 in words is "eight hundred eighty-one million, four thousand, nine hundred ninety-seven".