983455217 has 2 divisors, whose sum is σ = 983455218. Its totient is φ = 983455216.

The previous prime is 983455169. The next prime is 983455223. The reversal of 983455217 is 712554389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829670416 + 153784801 = 28804^2 + 12401^2 .

It is a cyclic number.

It is not a de Polignac number, because 983455217 - 2¹² = 983451121 is a prime.

It is not a weakly prime, because it can be changed into another prime (983455267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491727608 + 491727609.

It is an arithmetic number, because the mean of its divisors is an integer number (491727609).

Almost surely, 2^983455217 is an apocalyptic number.

It is an amenable number.

983455217 is a deficient number, since it is larger than the sum of its proper divisors (1).

983455217 is an equidigital number, since it uses as much as digits as its factorization.

983455217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 983455217 is about 31360.0895566323. The cubic root of 983455217 is about 994.4543752292.

The spelling of 983455217 in words is "nine hundred eighty-three million, four hundred fifty-five thousand, two hundred seventeen".