78483739 has 2 divisors, whose sum is σ = 78483740. Its totient is φ = 78483738.

The previous prime is 78483731. The next prime is 78483761. The reversal of 78483739 is 93738487.

It is a weak prime.

It is an emirp because it is prime and its reverse (93738487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78483739 - 2³ = 78483731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78483692 and 78483701.

It is not a weakly prime, because it can be changed into another prime (78483731) 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, 39241869 + 39241870.

It is an arithmetic number, because the mean of its divisors is an integer number (39241870).

Almost surely, 2^78483739 is an apocalyptic number.

78483739 is a deficient number, since it is larger than the sum of its proper divisors (1).

78483739 is an equidigital number, since it uses as much as digits as its factorization.

78483739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 78483739 is about 8859.1048644883. The cubic root of 78483739 is about 428.1473184167.

The spelling of 78483739 in words is "seventy-eight million, four hundred eighty-three thousand, seven hundred thirty-nine".