719940017 has 2 divisors, whose sum is σ = 719940018. Its totient is φ = 719940016.

The previous prime is 719939981. The next prime is 719940029. The reversal of 719940017 is 710049917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613107121 + 106832896 = 24761^2 + 10336^2 .

It is an emirp because it is prime and its reverse (710049917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 719940017 - 2¹⁰ = 719938993 is a prime.

It is not a weakly prime, because it can be changed into another prime (719940097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359970008 + 359970009.

It is an arithmetic number, because the mean of its divisors is an integer number (359970009).

Almost surely, 2^719940017 is an apocalyptic number.

It is an amenable number.

719940017 is a deficient number, since it is larger than the sum of its proper divisors (1).

719940017 is an equidigital number, since it uses as much as digits as its factorization.

719940017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 719940017 is about 26831.6979895049. The cubic root of 719940017 is about 896.2560589812.

The spelling of 719940017 in words is "seven hundred nineteen million, nine hundred forty thousand, seventeen".