999608417 has 2 divisors, whose sum is σ = 999608418. Its totient is φ = 999608416.

The previous prime is 999608399. The next prime is 999608447. The reversal of 999608417 is 714806999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968516641 + 31091776 = 31121^2 + 5576^2 .

It is a cyclic number.

It is not a de Polignac number, because 999608417 - 2²⁰ = 998559841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999608447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499804208 + 499804209.

It is an arithmetic number, because the mean of its divisors is an integer number (499804209).

Almost surely, 2^999608417 is an apocalyptic number.

It is an amenable number.

999608417 is a deficient number, since it is larger than the sum of its proper divisors (1).

999608417 is an equidigital number, since it uses as much as digits as its factorization.

999608417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 999608417 is about 31616.5845245814. The cubic root of 999608417 is about 999.8694552922.

The spelling of 999608417 in words is "nine hundred ninety-nine million, six hundred eight thousand, four hundred seventeen".