78463423 has 2 divisors, whose sum is σ = 78463424. Its totient is φ = 78463422.

The previous prime is 78463417. The next prime is 78463481. The reversal of 78463423 is 32436487.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32436487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78463423 - 2⁵ = 78463391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78463493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39231711 + 39231712.

It is an arithmetic number, because the mean of its divisors is an integer number (39231712).

Almost surely, 2^78463423 is an apocalyptic number.

78463423 is a deficient number, since it is larger than the sum of its proper divisors (1).

78463423 is an equidigital number, since it uses as much as digits as its factorization.

78463423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 37.

The square root of 78463423 is about 8857.9581733038. The cubic root of 78463423 is about 428.1103723704.

The spelling of 78463423 in words is "seventy-eight million, four hundred sixty-three thousand, four hundred twenty-three".