100019669 has 2 divisors, whose sum is σ = 100019670. Its totient is φ = 100019668.

The previous prime is 100019659. The next prime is 100019681. The reversal of 100019669 is 966910001.

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., 95452900 + 4566769 = 9770^2 + 2137^2 .

It is a cyclic number.

It is not a de Polignac number, because 100019669 - 2¹⁶ = 99954133 is a prime.

It is a super-2 number, since 2×100019669² = 20007868373739122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100019659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50009834 + 50009835.

It is an arithmetic number, because the mean of its divisors is an integer number (50009835).

Almost surely, 2^100019669 is an apocalyptic number.

It is an amenable number.

100019669 is a deficient number, since it is larger than the sum of its proper divisors (1).

100019669 is an equidigital number, since it uses as much as digits as its factorization.

100019669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 100019669 is about 10000.9834016461. The cubic root of 100019669 is about 464.1893131699.

It can be divided in two parts, 10001 and 9669, that multiplied together give a palindrome (96699669).

The spelling of 100019669 in words is "one hundred million, nineteen thousand, six hundred sixty-nine".