99994143397 has 2 divisors, whose sum is σ = 99994143398. Its totient is φ = 99994143396.

The previous prime is 99994143391. The next prime is 99994143413. The reversal of 99994143397 is 79334149999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62580525921 + 37413617476 = 250161^2 + 193426^2 .

It is a cyclic number.

It is not a de Polignac number, because 99994143397 - 2³¹ = 97846659749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99994143391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49997071698 + 49997071699.

It is an arithmetic number, because the mean of its divisors is an integer number (49997071699).

Almost surely, 2^99994143397 is an apocalyptic number.

It is an amenable number.

99994143397 is a deficient number, since it is larger than the sum of its proper divisors (1).

99994143397 is an equidigital number, since it uses as much as digits as its factorization.

99994143397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59521392, while the sum is 67.

The spelling of 99994143397 in words is "ninety-nine billion, nine hundred ninety-four million, one hundred forty-three thousand, three hundred ninety-seven".