98649709 has 2 divisors, whose sum is σ = 98649710. Its totient is φ = 98649708.

The previous prime is 98649689. The next prime is 98649763. The reversal of 98649709 is 90794689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68641225 + 30008484 = 8285^2 + 5478^2 .

It is an emirp because it is prime and its reverse (90794689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98649709 - 2²¹ = 96552557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98649769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49324854 + 49324855.

It is an arithmetic number, because the mean of its divisors is an integer number (49324855).

Almost surely, 2^98649709 is an apocalyptic number.

It is an amenable number.

98649709 is a deficient number, since it is larger than the sum of its proper divisors (1).

98649709 is an equidigital number, since it uses as much as digits as its factorization.

98649709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 98649709 is about 9932.2559874381. The cubic root of 98649709 is about 462.0602437010.

The spelling of 98649709 in words is "ninety-eight million, six hundred forty-nine thousand, seven hundred nine".