998740307 has 2 divisors, whose sum is σ = 998740308. Its totient is φ = 998740306.

The previous prime is 998740261. The next prime is 998740333. The reversal of 998740307 is 703047899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998740307 - 2¹⁰ = 998739283 is a prime.

It is not a weakly prime, because it can be changed into another prime (998740907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499370153 + 499370154.

It is an arithmetic number, because the mean of its divisors is an integer number (499370154).

Almost surely, 2^998740307 is an apocalyptic number.

998740307 is a deficient number, since it is larger than the sum of its proper divisors (1).

998740307 is an equidigital number, since it uses as much as digits as its factorization.

998740307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 998740307 is about 31602.8528300848. The cubic root of 998740307 is about 999.5799258958.

The spelling of 998740307 in words is "nine hundred ninety-eight million, seven hundred forty thousand, three hundred seven".