168449077 has 2 divisors, whose sum is σ = 168449078. Its totient is φ = 168449076.

The previous prime is 168449069. The next prime is 168449111. The reversal of 168449077 is 770944861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127373796 + 41075281 = 11286^2 + 6409^2 .

It is a cyclic number.

It is not a de Polignac number, because 168449077 - 2³ = 168449069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168449377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84224538 + 84224539.

It is an arithmetic number, because the mean of its divisors is an integer number (84224539).

Almost surely, 2^168449077 is an apocalyptic number.

It is an amenable number.

168449077 is a deficient number, since it is larger than the sum of its proper divisors (1).

168449077 is an equidigital number, since it uses as much as digits as its factorization.

168449077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 168449077 is about 12978.7933568572. The cubic root of 168449077 is about 552.2760523695.

It can be divided in two parts, 16844 and 9077, that added together give a square (25921 = 161²).

The spelling of 168449077 in words is "one hundred sixty-eight million, four hundred forty-nine thousand, seventy-seven".