608993393 has 2 divisors, whose sum is σ = 608993394. Its totient is φ = 608993392.

The previous prime is 608993387. The next prime is 608993443. The reversal of 608993393 is 393399806.

It is an a-pointer prime, because the next prime (608993443) can be obtained adding 608993393 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368371249 + 240622144 = 19193^2 + 15512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-608993393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (608993093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304496696 + 304496697.

It is an arithmetic number, because the mean of its divisors is an integer number (304496697).

Almost surely, 2^608993393 is an apocalyptic number.

It is an amenable number.

608993393 is a deficient number, since it is larger than the sum of its proper divisors (1).

608993393 is an equidigital number, since it uses as much as digits as its factorization.

608993393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 608993393 is about 24677.7914935677. The cubic root of 608993393 is about 847.6258514879.

The spelling of 608993393 in words is "six hundred eight million, nine hundred ninety-three thousand, three hundred ninety-three".