78462841 has 2 divisors, whose sum is σ = 78462842. Its totient is φ = 78462840.

The previous prime is 78462833. The next prime is 78462847. The reversal of 78462841 is 14826487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45158400 + 33304441 = 6720^2 + 5771^2 .

It is a cyclic number.

It is not a de Polignac number, because 78462841 - 2³ = 78462833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78462794 and 78462803.

It is not a weakly prime, because it can be changed into another prime (78462847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39231420 + 39231421.

It is an arithmetic number, because the mean of its divisors is an integer number (39231421).

Almost surely, 2^78462841 is an apocalyptic number.

It is an amenable number.

78462841 is a deficient number, since it is larger than the sum of its proper divisors (1).

78462841 is an equidigital number, since it uses as much as digits as its factorization.

78462841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 40.

The square root of 78462841 is about 8857.9253214283. The cubic root of 78462841 is about 428.1093138693.

The spelling of 78462841 in words is "seventy-eight million, four hundred sixty-two thousand, eight hundred forty-one".