78965347 has 4 divisors (see below), whose sum is σ = 81688320. Its totient is φ = 76242376.

The previous prime is 78965317. The next prime is 78965399. The reversal of 78965347 is 74356987.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78965347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78965347.

It is not an unprimeable number, because it can be changed into a prime (78965317) 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, 1361443 + ... + 1361500.

It is an arithmetic number, because the mean of its divisors is an integer number (20422080).

Almost surely, 2^78965347 is an apocalyptic number.

78965347 is a deficient number, since it is larger than the sum of its proper divisors (2722973).

78965347 is a wasteful number, since it uses less digits than its factorization.

78965347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722972.

The product of its digits is 1270080, while the sum is 49.

The square root of 78965347 is about 8886.2448199450. The cubic root of 78965347 is about 429.0212949223.

The spelling of 78965347 in words is "seventy-eight million, nine hundred sixty-five thousand, three hundred forty-seven".