78112339 has 4 divisors (see below), whose sum is σ = 80017560. Its totient is φ = 76207120.

The previous prime is 78112337. The next prime is 78112369. The reversal of 78112339 is 93321187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93321187 = 5167 ⋅18061.

It is a cyclic number.

It is not a de Polignac number, because 78112339 - 2¹ = 78112337 is a prime.

It is a super-2 number, since 2×78112339² = 12203075008101842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78112337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952549 + ... + 952630.

It is an arithmetic number, because the mean of its divisors is an integer number (20004390).

Almost surely, 2^78112339 is an apocalyptic number.

78112339 is a deficient number, since it is larger than the sum of its proper divisors (1905221).

78112339 is a wasteful number, since it uses less digits than its factorization.

78112339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905220.

The product of its digits is 9072, while the sum is 34.

The square root of 78112339 is about 8838.1185214954. The cubic root of 78112339 is about 427.4708920824.

The spelling of 78112339 in words is "seventy-eight million, one hundred twelve thousand, three hundred thirty-nine".