78473379 has 4 divisors (see below), whose sum is σ = 104631176. Its totient is φ = 52315584.

The previous prime is 78473371. The next prime is 78473387. The reversal of 78473379 is 97337487.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (78473371) and next prime (78473387).

It is not a de Polignac number, because 78473379 - 2³ = 78473371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78473371) 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, 13078894 + ... + 13078899.

It is an arithmetic number, because the mean of its divisors is an integer number (26157794).

Almost surely, 2^78473379 is an apocalyptic number.

78473379 is a deficient number, since it is larger than the sum of its proper divisors (26157797).

78473379 is a wasteful number, since it uses less digits than its factorization.

78473379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26157796.

The product of its digits is 889056, while the sum is 48.

The square root of 78473379 is about 8858.5201360047. The cubic root of 78473379 is about 428.1284788394.

The spelling of 78473379 in words is "seventy-eight million, four hundred seventy-three thousand, three hundred seventy-nine".