99178049 has 2 divisors, whose sum is σ = 99178050. Its totient is φ = 99178048.

The previous prime is 99178033. The next prime is 99178063. The reversal of 99178049 is 94087199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96432400 + 2745649 = 9820^2 + 1657^2 .

It is a cyclic number.

It is not a de Polignac number, because 99178049 - 2⁴ = 99178033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99177994 and 99178012.

It is not a weakly prime, because it can be changed into another prime (99178349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49589024 + 49589025.

It is an arithmetic number, because the mean of its divisors is an integer number (49589025).

Almost surely, 2^99178049 is an apocalyptic number.

It is an amenable number.

99178049 is a deficient number, since it is larger than the sum of its proper divisors (1).

99178049 is an equidigital number, since it uses as much as digits as its factorization.

99178049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 99178049 is about 9958.8176507053. The cubic root of 99178049 is about 462.8836635313.

The spelling of 99178049 in words is "ninety-nine million, one hundred seventy-eight thousand, forty-nine".