998079487 has 2 divisors, whose sum is σ = 998079488. Its totient is φ = 998079486.

The previous prime is 998079449. The next prime is 998079491. The reversal of 998079487 is 784970899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998079487 - 2¹¹ = 998077439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998079587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499039743 + 499039744.

It is an arithmetic number, because the mean of its divisors is an integer number (499039744).

Almost surely, 2^998079487 is an apocalyptic number.

998079487 is a deficient number, since it is larger than the sum of its proper divisors (1).

998079487 is an equidigital number, since it uses as much as digits as its factorization.

998079487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 998079487 is about 31592.3960313237. The cubic root of 998079487 is about 999.3594187433.

The spelling of 998079487 in words is "nine hundred ninety-eight million, seventy-nine thousand, four hundred eighty-seven".