100905479 has 2 divisors, whose sum is σ = 100905480. Its totient is φ = 100905478.

The previous prime is 100905463. The next prime is 100905487. The reversal of 100905479 is 974509001.

It is a strong prime.

It is an emirp because it is prime and its reverse (974509001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100905479 - 2⁴ = 100905463 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 (100905449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50452739 + 50452740.

It is an arithmetic number, because the mean of its divisors is an integer number (50452740).

Almost surely, 2^100905479 is an apocalyptic number.

100905479 is a deficient number, since it is larger than the sum of its proper divisors (1).

100905479 is an equidigital number, since it uses as much as digits as its factorization.

100905479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 100905479 is about 10045.1719248602. The cubic root of 100905479 is about 465.5556297959. Note that the first 3 decimals are identical.

The spelling of 100905479 in words is "one hundred million, nine hundred five thousand, four hundred seventy-nine".