999997357 has 2 divisors, whose sum is σ = 999997358. Its totient is φ = 999997356.

The previous prime is 999997331. The next prime is 999997403. The reversal of 999997357 is 753799999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999761161 + 236196 = 31619^2 + 486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999997357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999997292 and 999997301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999997457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998678 + 499998679.

It is an arithmetic number, because the mean of its divisors is an integer number (499998679).

Almost surely, 2^999997357 is an apocalyptic number.

It is an amenable number.

999997357 is a deficient number, since it is larger than the sum of its proper divisors (1).

999997357 is an equidigital number, since it uses as much as digits as its factorization.

999997357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43401015, while the sum is 67.

The square root of 999997357 is about 31622.7348121569. The cubic root of 999997357 is about 999.9991189992. Note that the first 3 decimals are identical.

The spelling of 999997357 in words is "nine hundred ninety-nine million, nine hundred ninety-seven thousand, three hundred fifty-seven".