78785339 has 8 divisors (see below), whose sum is σ = 79994880. Its totient is φ = 77585256.

The previous prime is 78785303. The next prime is 78785341. The reversal of 78785339 is 93358787.

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 78785339 - 2¹² = 78781243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78785359) 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, 15422 + ... + 19884.

It is an arithmetic number, because the mean of its divisors is an integer number (9999360).

Almost surely, 2^78785339 is an apocalyptic number.

78785339 is a deficient number, since it is larger than the sum of its proper divisors (1209541).

78785339 is a wasteful number, since it uses less digits than its factorization.

78785339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729.

The product of its digits is 1270080, while the sum is 50.

The square root of 78785339 is about 8876.1105784009. The cubic root of 78785339 is about 428.6950504594.

The spelling of 78785339 in words is "seventy-eight million, seven hundred eighty-five thousand, three hundred thirty-nine".