99728743 has 2 divisors, whose sum is σ = 99728744. Its totient is φ = 99728742.

The previous prime is 99728729. The next prime is 99728771. The reversal of 99728743 is 34782799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99728743 - 2⁵ = 99728711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99728723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49864371 + 49864372.

It is an arithmetic number, because the mean of its divisors is an integer number (49864372).

Almost surely, 2^99728743 is an apocalyptic number.

99728743 is a deficient number, since it is larger than the sum of its proper divisors (1).

99728743 is an equidigital number, since it uses as much as digits as its factorization.

99728743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 99728743 is about 9986.4279399593. The cubic root of 99728743 is about 463.7388154901.

The spelling of 99728743 in words is "ninety-nine million, seven hundred twenty-eight thousand, seven hundred forty-three".