100490569 has 2 divisors, whose sum is σ = 100490570. Its totient is φ = 100490568.

The previous prime is 100490567. The next prime is 100490573. The reversal of 100490569 is 965094001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100260169 + 230400 = 10013^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 100490569 - 2¹ = 100490567 is a prime.

It is a super-2 number, since 2×100490569² = 20196708915887522, which contains 22 as substring.

Together with 100490567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100490567) 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, 50245284 + 50245285.

It is an arithmetic number, because the mean of its divisors is an integer number (50245285).

Almost surely, 2^100490569 is an apocalyptic number.

It is an amenable number.

100490569 is a deficient number, since it is larger than the sum of its proper divisors (1).

100490569 is an equidigital number, since it uses as much as digits as its factorization.

100490569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 100490569 is about 10024.4984413186. The cubic root of 100490569 is about 464.9166521135.

The spelling of 100490569 in words is "one hundred million, four hundred ninety thousand, five hundred sixty-nine".