78471467 has 2 divisors, whose sum is σ = 78471468. Its totient is φ = 78471466.

The previous prime is 78471451. The next prime is 78471479. The reversal of 78471467 is 76417487.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78471467 - 2⁴ = 78471451 is a prime.

It is a super-2 number, since 2×78471467² = 12315542266264178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78471427) 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, 39235733 + 39235734.

It is an arithmetic number, because the mean of its divisors is an integer number (39235734).

Almost surely, 2^78471467 is an apocalyptic number.

78471467 is a deficient number, since it is larger than the sum of its proper divisors (1).

78471467 is an equidigital number, since it uses as much as digits as its factorization.

78471467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 44.

The square root of 78471467 is about 8858.4122166447. The cubic root of 78471467 is about 428.1250017014.

The spelling of 78471467 in words is "seventy-eight million, four hundred seventy-one thousand, four hundred sixty-seven".