98291509 has 2 divisors, whose sum is σ = 98291510. Its totient is φ = 98291508.

The previous prime is 98291497. The next prime is 98291533. The reversal of 98291509 is 90519289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87048900 + 11242609 = 9330^2 + 3353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98291509 is a prime.

It is a super-2 number, since 2×98291509² = 19322441482994162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98291539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49145754 + 49145755.

It is an arithmetic number, because the mean of its divisors is an integer number (49145755).

Almost surely, 2^98291509 is an apocalyptic number.

It is an amenable number.

98291509 is a deficient number, since it is larger than the sum of its proper divisors (1).

98291509 is an equidigital number, since it uses as much as digits as its factorization.

98291509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 98291509 is about 9914.2074317618. The cubic root of 98291509 is about 461.5003139931.

The spelling of 98291509 in words is "ninety-eight million, two hundred ninety-one thousand, five hundred nine".