78423353 has 4 divisors (see below), whose sum is σ = 81833088. Its totient is φ = 75013620.

The previous prime is 78423343. The next prime is 78423361. The reversal of 78423353 is 35332487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78423353 - 2¹⁴ = 78406969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78423343) 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 in 3 ways as a sum of consecutive naturals, for example, 1704833 + ... + 1704878.

It is an arithmetic number, because the mean of its divisors is an integer number (20458272).

Almost surely, 2^78423353 is an apocalyptic number.

It is an amenable number.

78423353 is a deficient number, since it is larger than the sum of its proper divisors (3409735).

78423353 is a wasteful number, since it uses less digits than its factorization.

78423353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409734.

The product of its digits is 60480, while the sum is 35.

The square root of 78423353 is about 8855.6960765374. The cubic root of 78423353 is about 428.0374836156.

The spelling of 78423353 in words is "seventy-eight million, four hundred twenty-three thousand, three hundred fifty-three".