100397827 has 2 divisors, whose sum is σ = 100397828. Its totient is φ = 100397826.

The previous prime is 100397777. The next prime is 100397831. The reversal of 100397827 is 728793001.

It is a strong prime.

It is an emirp because it is prime and its reverse (728793001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100397827 is a prime.

It is not a weakly prime, because it can be changed into another prime (100397867) 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, 50198913 + 50198914.

It is an arithmetic number, because the mean of its divisors is an integer number (50198914).

Almost surely, 2^100397827 is an apocalyptic number.

100397827 is a deficient number, since it is larger than the sum of its proper divisors (1).

100397827 is an equidigital number, since it uses as much as digits as its factorization.

100397827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 100397827 is about 10019.8716059638. The cubic root of 100397827 is about 464.7735853839.

The spelling of 100397827 in words is "one hundred million, three hundred ninety-seven thousand, eight hundred twenty-seven".