78104239 has 8 divisors (see below), whose sum is σ = 83296080. Its totient is φ = 72978816.

The previous prime is 78104237. The next prime is 78104249. The reversal of 78104239 is 93240187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78104239 - 2¹ = 78104237 is a prime.

It is a super-2 number, since 2×78104239² = 12200544299538242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78104237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14164 + ... + 18889.

It is an arithmetic number, because the mean of its divisors is an integer number (10412010).

Almost surely, 2^78104239 is an apocalyptic number.

78104239 is a deficient number, since it is larger than the sum of its proper divisors (5191841).

78104239 is a wasteful number, since it uses less digits than its factorization.

78104239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33209.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 78104239 is about 8837.6602672879. The cubic root of 78104239 is about 427.4561157830.

The spelling of 78104239 in words is "seventy-eight million, one hundred four thousand, two hundred thirty-nine".