78049 has 2 divisors, whose sum is σ = 78050. Its totient is φ = 78048.

The previous prime is 78041. The next prime is 78059. The reversal of 78049 is 94087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57600 + 20449 = 240^2 + 143^2 .

It is a cyclic number.

It is not a de Polignac number, because 78049 - 2³ = 78041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39024 + 39025.

It is an arithmetic number, because the mean of its divisors is an integer number (39025).

2⁷⁸⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

78049 is a deficient number, since it is larger than the sum of its proper divisors (1).

78049 is an equidigital number, since it uses as much as digits as its factorization.

78049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 78049 is about 279.3725111746. The cubic root of 78049 is about 42.7355319644.

The spelling of 78049 in words is "seventy-eight thousand, forty-nine".