99178349 has 2 divisors, whose sum is σ = 99178350. Its totient is φ = 99178348.

The previous prime is 99178333. The next prime is 99178361. The reversal of 99178349 is 94387199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82937449 + 16240900 = 9107^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 99178349 - 2⁴ = 99178333 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99178297 and 99178306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99178049) 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, 49589174 + 49589175.

It is an arithmetic number, because the mean of its divisors is an integer number (49589175).

Almost surely, 2^99178349 is an apocalyptic number.

It is an amenable number.

99178349 is a deficient number, since it is larger than the sum of its proper divisors (1).

99178349 is an equidigital number, since it uses as much as digits as its factorization.

99178349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 99178349 is about 9958.8327127229. The cubic root of 99178349 is about 462.8841302507.

The spelling of 99178349 in words is "ninety-nine million, one hundred seventy-eight thousand, three hundred forty-nine".