993951697 has 2 divisors, whose sum is σ = 993951698. Its totient is φ = 993951696.

The previous prime is 993951689. The next prime is 993951703. The reversal of 993951697 is 796159399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857552656 + 136399041 = 29284^2 + 11679^2 .

It is a cyclic number.

It is not a de Polignac number, because 993951697 - 2³ = 993951689 is a prime.

It is not a weakly prime, because it can be changed into another prime (993951677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496975848 + 496975849.

It is an arithmetic number, because the mean of its divisors is an integer number (496975849).

Almost surely, 2^993951697 is an apocalyptic number.

It is an amenable number.

993951697 is a deficient number, since it is larger than the sum of its proper divisors (1).

993951697 is an equidigital number, since it uses as much as digits as its factorization.

993951697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4133430, while the sum is 58.

The square root of 993951697 is about 31526.9994924985. Note that the first 3 decimals coincide. The cubic root of 993951697 is about 997.9798206235.

The spelling of 993951697 in words is "nine hundred ninety-three million, nine hundred fifty-one thousand, six hundred ninety-seven".