100019393 has 2 divisors, whose sum is σ = 100019394. Its totient is φ = 100019392.

The previous prime is 100019329. The next prime is 100019407. The reversal of 100019393 is 393910001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99540529 + 478864 = 9977^2 + 692^2 .

It is a cyclic number.

It is not a de Polignac number, because 100019393 - 2⁶ = 100019329 is a prime.

It is not a weakly prime, because it can be changed into another prime (100019323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50009696 + 50009697.

It is an arithmetic number, because the mean of its divisors is an integer number (50009697).

Almost surely, 2^100019393 is an apocalyptic number.

It is an amenable number.

100019393 is a deficient number, since it is larger than the sum of its proper divisors (1).

100019393 is an equidigital number, since it uses as much as digits as its factorization.

100019393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 100019393 is about 10000.9696029935. The cubic root of 100019393 is about 464.1888861993.

Adding to 100019393 its reverse (393910001), we get a palindrome (493929394).

The spelling of 100019393 in words is "one hundred million, nineteen thousand, three hundred ninety-three".