998214907 has 2 divisors, whose sum is σ = 998214908. Its totient is φ = 998214906.

The previous prime is 998214901. The next prime is 998214929. The reversal of 998214907 is 709412899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998214907 - 2⁷ = 998214779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (998214901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499107453 + 499107454.

It is an arithmetic number, because the mean of its divisors is an integer number (499107454).

Almost surely, 2^998214907 is an apocalyptic number.

998214907 is a deficient number, since it is larger than the sum of its proper divisors (1).

998214907 is an equidigital number, since it uses as much as digits as its factorization.

998214907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 998214907 is about 31594.5391958800. The cubic root of 998214907 is about 999.4046145866.

The spelling of 998214907 in words is "nine hundred ninety-eight million, two hundred fourteen thousand, nine hundred seven".