988648393 has 2 divisors, whose sum is σ = 988648394. Its totient is φ = 988648392.

The previous prime is 988648387. The next prime is 988648429. The reversal of 988648393 is 393846889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596727184 + 391921209 = 24428^2 + 19797^2 .

It is a cyclic number.

It is not a de Polignac number, because 988648393 - 2⁵ = 988648361 is a prime.

It is not a weakly prime, because it can be changed into another prime (988648313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494324196 + 494324197.

It is an arithmetic number, because the mean of its divisors is an integer number (494324197).

Almost surely, 2^988648393 is an apocalyptic number.

It is an amenable number.

988648393 is a deficient number, since it is larger than the sum of its proper divisors (1).

988648393 is an equidigital number, since it uses as much as digits as its factorization.

988648393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 58.

The square root of 988648393 is about 31442.7796640183. The cubic root of 988648393 is about 996.2017223527.

The spelling of 988648393 in words is "nine hundred eighty-eight million, six hundred forty-eight thousand, three hundred ninety-three".