98788457 has 2 divisors, whose sum is σ = 98788458. Its totient is φ = 98788456.

The previous prime is 98788453. The next prime is 98788493. The reversal of 98788457 is 75488789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66650896 + 32137561 = 8164^2 + 5669^2 .

It is a cyclic number.

It is not a de Polignac number, because 98788457 - 2² = 98788453 is a prime.

It is not a weakly prime, because it can be changed into another prime (98788451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49394228 + 49394229.

It is an arithmetic number, because the mean of its divisors is an integer number (49394229).

Almost surely, 2^98788457 is an apocalyptic number.

It is an amenable number.

98788457 is a deficient number, since it is larger than the sum of its proper divisors (1).

98788457 is an equidigital number, since it uses as much as digits as its factorization.

98788457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 56.

The square root of 98788457 is about 9939.2382504898. The cubic root of 98788457 is about 462.2767670696.

The spelling of 98788457 in words is "ninety-eight million, seven hundred eighty-eight thousand, four hundred fifty-seven".