98136457 has 2 divisors, whose sum is σ = 98136458. Its totient is φ = 98136456.

The previous prime is 98136439. The next prime is 98136481. The reversal of 98136457 is 75463189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83612736 + 14523721 = 9144^2 + 3811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98136457 is a prime.

It is not a weakly prime, because it can be changed into another prime (98136487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49068228 + 49068229.

It is an arithmetic number, because the mean of its divisors is an integer number (49068229).

Almost surely, 2^98136457 is an apocalyptic number.

It is an amenable number.

98136457 is a deficient number, since it is larger than the sum of its proper divisors (1).

98136457 is an equidigital number, since it uses as much as digits as its factorization.

98136457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 98136457 is about 9906.3846583908. The cubic root of 98136457 is about 461.2575185012.

The spelling of 98136457 in words is "ninety-eight million, one hundred thirty-six thousand, four hundred fifty-seven".