78037441 has 2 divisors, whose sum is σ = 78037442. Its totient is φ = 78037440.

The previous prime is 78037417. The next prime is 78037451. The reversal of 78037441 is 14473087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77880625 + 156816 = 8825^2 + 396^2 .

It is an emirp because it is prime and its reverse (14473087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78037441 - 2¹¹ = 78035393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78037397 and 78037406.

It is not a weakly prime, because it can be changed into another prime (78037411) 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, 39018720 + 39018721.

It is an arithmetic number, because the mean of its divisors is an integer number (39018721).

Almost surely, 2^78037441 is an apocalyptic number.

It is an amenable number.

78037441 is a deficient number, since it is larger than the sum of its proper divisors (1).

78037441 is an equidigital number, since it uses as much as digits as its factorization.

78037441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 78037441 is about 8833.8802912423. The cubic root of 78037441 is about 427.3342215989.

The spelling of 78037441 in words is "seventy-eight million, thirty-seven thousand, four hundred forty-one".