100641389 has 2 divisors, whose sum is σ = 100641390. Its totient is φ = 100641388.

The previous prime is 100641383. The next prime is 100641419. The reversal of 100641389 is 983146001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80910025 + 19731364 = 8995^2 + 4442^2 .

It is a cyclic number.

It is not a de Polignac number, because 100641389 - 2⁸ = 100641133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100641383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50320694 + 50320695.

It is an arithmetic number, because the mean of its divisors is an integer number (50320695).

Almost surely, 2^100641389 is an apocalyptic number.

It is an amenable number.

100641389 is a deficient number, since it is larger than the sum of its proper divisors (1).

100641389 is an equidigital number, since it uses as much as digits as its factorization.

100641389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 100641389 is about 10032.0181917698. The cubic root of 100641389 is about 465.1491239446.

The spelling of 100641389 in words is "one hundred million, six hundred forty-one thousand, three hundred eighty-nine".