78354467 has 2 divisors, whose sum is σ = 78354468. Its totient is φ = 78354466.

The previous prime is 78354449. The next prime is 78354473. The reversal of 78354467 is 76445387.

It is a strong prime.

It is an emirp because it is prime and its reverse (76445387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78354467 - 2¹⁸ = 78092323 is a prime.

It is a super-2 number, since 2×78354467² = 12278844997708178, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4578992 and since 78354467 and 4578992 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (78354427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39177233 + 39177234.

It is an arithmetic number, because the mean of its divisors is an integer number (39177234).

Almost surely, 2^78354467 is an apocalyptic number.

78354467 is a deficient number, since it is larger than the sum of its proper divisors (1).

78354467 is an equidigital number, since it uses as much as digits as its factorization.

78354467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 44.

The square root of 78354467 is about 8851.8058609529. The cubic root of 78354467 is about 427.9121194798.

The spelling of 78354467 in words is "seventy-eight million, three hundred fifty-four thousand, four hundred sixty-seven".