19896901 has 2 divisors, whose sum is σ = 19896902. Its totient is φ = 19896900.

The previous prime is 19896893. The next prime is 19896907. The reversal of 19896901 is 10969891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17023876 + 2873025 = 4126^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 19896901 - 2³ = 19896893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19896907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9948450 + 9948451.

It is an arithmetic number, because the mean of its divisors is an integer number (9948451).

Almost surely, 2^19896901 is an apocalyptic number.

It is an amenable number.

19896901 is a deficient number, since it is larger than the sum of its proper divisors (1).

19896901 is an equidigital number, since it uses as much as digits as its factorization.

19896901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 19896901 is about 4460.5942429232. The cubic root of 19896901 is about 270.9745349910.

The spelling of 19896901 in words is "nineteen million, eight hundred ninety-six thousand, nine hundred one".