100043393 has 2 divisors, whose sum is σ = 100043394. Its totient is φ = 100043392.

The previous prime is 100043371. The next prime is 100043423. The reversal of 100043393 is 393340001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94148209 + 5895184 = 9703^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 100043393 - 2²⁰ = 98994817 is a prime.

It is not a weakly prime, because it can be changed into another prime (100043093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021696 + 50021697.

It is an arithmetic number, because the mean of its divisors is an integer number (50021697).

Almost surely, 2^100043393 is an apocalyptic number.

It is an amenable number.

100043393 is a deficient number, since it is larger than the sum of its proper divisors (1).

100043393 is an equidigital number, since it uses as much as digits as its factorization.

100043393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 100043393 is about 10002.1694146820. The cubic root of 100043393 is about 464.2260111407.

Adding to 100043393 its reverse (393340001), we get a palindrome (493383394).

The spelling of 100043393 in words is "one hundred million, forty-three thousand, three hundred ninety-three".