78829201 has 6 divisors (see below), whose sum is σ = 86647106. Its totient is φ = 71662800.

The previous prime is 78829193. The next prime is 78829217. The reversal of 78829201 is 10292887.

It can be written as a sum of positive squares in only one way, i.e., 66438801 + 12390400 = 8151^2 + 3520^2 .

It is not a de Polignac number, because 78829201 - 2³ = 78829193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78829291) 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 in 5 ways as a sum of consecutive naturals, for example, 325620 + ... + 325861.

Almost surely, 2^78829201 is an apocalyptic number.

It is an amenable number.

78829201 is a deficient number, since it is larger than the sum of its proper divisors (7817905).

78829201 is a wasteful number, since it uses less digits than its factorization.

78829201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651503 (or 651492 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 78829201 is about 8878.5810240150. The cubic root of 78829201 is about 428.7745912054.

The spelling of 78829201 in words is "seventy-eight million, eight hundred twenty-nine thousand, two hundred one".