100243439 has 2 divisors, whose sum is σ = 100243440. Its totient is φ = 100243438.

The previous prime is 100243421. The next prime is 100243463. The reversal of 100243439 is 934342001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100243439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100243469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50121719 + 50121720.

It is an arithmetic number, because the mean of its divisors is an integer number (50121720).

Almost surely, 2^100243439 is an apocalyptic number.

100243439 is a deficient number, since it is larger than the sum of its proper divisors (1).

100243439 is an equidigital number, since it uses as much as digits as its factorization.

100243439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 100243439 is about 10012.1645511847. The cubic root of 100243439 is about 464.5352260527.

The spelling of 100243439 in words is "one hundred million, two hundred forty-three thousand, four hundred thirty-nine".