988291573 has 2 divisors, whose sum is σ = 988291574. Its totient is φ = 988291572.

The previous prime is 988291547. The next prime is 988291589. The reversal of 988291573 is 375192889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 976062564 + 12229009 = 31242^2 + 3497^2 .

It is an emirp because it is prime and its reverse (375192889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 988291573 - 2²¹ = 986194421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 988291573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988291523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494145786 + 494145787.

It is an arithmetic number, because the mean of its divisors is an integer number (494145787).

Almost surely, 2^988291573 is an apocalyptic number.

It is an amenable number.

988291573 is a deficient number, since it is larger than the sum of its proper divisors (1).

988291573 is an equidigital number, since it uses as much as digits as its factorization.

988291573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 52.

The square root of 988291573 is about 31437.1050352923. The cubic root of 988291573 is about 996.0818592231.

The spelling of 988291573 in words is "nine hundred eighty-eight million, two hundred ninety-one thousand, five hundred seventy-three".