78085349 has 4 divisors (see below), whose sum is σ = 78521760. Its totient is φ = 77648940.

The previous prime is 78085327. The next prime is 78085367. The reversal of 78085349 is 94358087.

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 a de Polignac number, because none of the positive numbers 2^k-78085349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78085309) 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, 217937 + ... + 218294.

It is an arithmetic number, because the mean of its divisors is an integer number (19630440).

Almost surely, 2^78085349 is an apocalyptic number.

It is an amenable number.

78085349 is a deficient number, since it is larger than the sum of its proper divisors (436411).

78085349 is a wasteful number, since it uses less digits than its factorization.

78085349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436410.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 78085349 is about 8836.5914808822. The cubic root of 78085349 is about 427.4216520237.

The spelling of 78085349 in words is "seventy-eight million, eighty-five thousand, three hundred forty-nine".