988579591 has 2 divisors, whose sum is σ = 988579592. Its totient is φ = 988579590.

The previous prime is 988579549. The next prime is 988579607. The reversal of 988579591 is 195975889.

It is a strong prime.

It is an emirp because it is prime and its reverse (195975889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 988579591 - 2¹⁹ = 988055303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988579531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494289795 + 494289796.

It is an arithmetic number, because the mean of its divisors is an integer number (494289796).

Almost surely, 2^988579591 is an apocalyptic number.

988579591 is a deficient number, since it is larger than the sum of its proper divisors (1).

988579591 is an equidigital number, since it uses as much as digits as its factorization.

988579591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 61.

The square root of 988579591 is about 31441.6855623231. The cubic root of 988579591 is about 996.1786125996.

The spelling of 988579591 in words is "nine hundred eighty-eight million, five hundred seventy-nine thousand, five hundred ninety-one".