19950017 has 2 divisors, whose sum is σ = 19950018. Its totient is φ = 19950016.

The previous prime is 19950013. The next prime is 19950023. The reversal of 19950017 is 71005991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11282881 + 8667136 = 3359^2 + 2944^2 .

It is a cyclic number.

It is not a de Polignac number, because 19950017 - 2² = 19950013 is a prime.

It is not a weakly prime, because it can be changed into another prime (19950013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9975008 + 9975009.

It is an arithmetic number, because the mean of its divisors is an integer number (9975009).

Almost surely, 2^19950017 is an apocalyptic number.

It is an amenable number.

19950017 is a deficient number, since it is larger than the sum of its proper divisors (1).

19950017 is an equidigital number, since it uses as much as digits as its factorization.

19950017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 19950017 is about 4466.5441898631. The cubic root of 19950017 is about 271.2154484649.

The spelling of 19950017 in words is "nineteen million, nine hundred fifty thousand, seventeen".