998038147 has 2 divisors, whose sum is σ = 998038148. Its totient is φ = 998038146.

The previous prime is 998038043. The next prime is 998038157. The reversal of 998038147 is 741830899.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998038147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998038147.

It is not a weakly prime, because it can be changed into another prime (998038157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499019073 + 499019074.

It is an arithmetic number, because the mean of its divisors is an integer number (499019074).

Almost surely, 2^998038147 is an apocalyptic number.

998038147 is a deficient number, since it is larger than the sum of its proper divisors (1).

998038147 is an equidigital number, since it uses as much as digits as its factorization.

998038147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 998038147 is about 31591.7417531861. The cubic root of 998038147 is about 999.3456208814.

The spelling of 998038147 in words is "nine hundred ninety-eight million, thirty-eight thousand, one hundred forty-seven".