98640833 has 2 divisors, whose sum is σ = 98640834. Its totient is φ = 98640832.

The previous prime is 98640811. The next prime is 98640863. The reversal of 98640833 is 33804689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92025649 + 6615184 = 9593^2 + 2572^2 .

It is an emirp because it is prime and its reverse (33804689) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98640833 is a prime.

It is not a weakly prime, because it can be changed into another prime (98640863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49320416 + 49320417.

It is an arithmetic number, because the mean of its divisors is an integer number (49320417).

Almost surely, 2^98640833 is an apocalyptic number.

It is an amenable number.

98640833 is a deficient number, since it is larger than the sum of its proper divisors (1).

98640833 is an equidigital number, since it uses as much as digits as its factorization.

98640833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 98640833 is about 9931.8091504016. The cubic root of 98640833 is about 462.0463853404.

The spelling of 98640833 in words is "ninety-eight million, six hundred forty thousand, eight hundred thirty-three".