100880891 has 2 divisors, whose sum is σ = 100880892. Its totient is φ = 100880890.

The previous prime is 100880849. The next prime is 100880903. The reversal of 100880891 is 198088001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100880891 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (100880831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50440445 + 50440446.

It is an arithmetic number, because the mean of its divisors is an integer number (50440446).

Almost surely, 2^100880891 is an apocalyptic number.

100880891 is a deficient number, since it is larger than the sum of its proper divisors (1).

100880891 is an equidigital number, since it uses as much as digits as its factorization.

100880891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 100880891 is about 10043.9479787582. The cubic root of 100880891 is about 465.5178121872.

The spelling of 100880891 in words is "one hundred million, eight hundred eighty thousand, eight hundred ninety-one".