988526789 has 2 divisors, whose sum is σ = 988526790. Its totient is φ = 988526788.

The previous prime is 988526783. The next prime is 988526801. The reversal of 988526789 is 987625889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 949564225 + 38962564 = 30815^2 + 6242^2 .

It is a cyclic number.

It is not a de Polignac number, because 988526789 - 2¹² = 988522693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988526783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494263394 + 494263395.

It is an arithmetic number, because the mean of its divisors is an integer number (494263395).

Almost surely, 2^988526789 is an apocalyptic number.

It is an amenable number.

988526789 is a deficient number, since it is larger than the sum of its proper divisors (1).

988526789 is an equidigital number, since it uses as much as digits as its factorization.

988526789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 62.

The square root of 988526789 is about 31440.8458696645. The cubic root of 988526789 is about 996.1608763242.

The spelling of 988526789 in words is "nine hundred eighty-eight million, five hundred twenty-six thousand, seven hundred eighty-nine".