997481099 has 2 divisors, whose sum is σ = 997481100. Its totient is φ = 997481098.

The previous prime is 997481063. The next prime is 997481119. The reversal of 997481099 is 990184799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997481099 - 2⁸ = 997480843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997481299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498740549 + 498740550.

It is an arithmetic number, because the mean of its divisors is an integer number (498740550).

Almost surely, 2^997481099 is an apocalyptic number.

997481099 is a deficient number, since it is larger than the sum of its proper divisors (1).

997481099 is an equidigital number, since it uses as much as digits as its factorization.

997481099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 997481099 is about 31582.9241679741. The cubic root of 997481099 is about 999.1596603604.

The spelling of 997481099 in words is "nine hundred ninety-seven million, four hundred eighty-one thousand, ninety-nine".