78413287 has 2 divisors, whose sum is σ = 78413288. Its totient is φ = 78413286.

The previous prime is 78413281. The next prime is 78413311. The reversal of 78413287 is 78231487.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78413287 is a prime.

It is a super-2 number, since 2×78413287² = 12297287156288738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78413281) 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, 39206643 + 39206644.

It is an arithmetic number, because the mean of its divisors is an integer number (39206644).

Almost surely, 2^78413287 is an apocalyptic number.

78413287 is a deficient number, since it is larger than the sum of its proper divisors (1).

78413287 is an equidigital number, since it uses as much as digits as its factorization.

78413287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 40.

The square root of 78413287 is about 8855.1277235283. The cubic root of 78413287 is about 428.0191693019.

The spelling of 78413287 in words is "seventy-eight million, four hundred thirteen thousand, two hundred eighty-seven".