78470395 has 4 divisors (see below), whose sum is σ = 94164480. Its totient is φ = 62776312.

The previous prime is 78470387. The next prime is 78470417. The reversal of 78470395 is 59307487.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78470395 - 2³ = 78470387 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7847035 + ... + 7847044.

It is an arithmetic number, because the mean of its divisors is an integer number (23541120).

Almost surely, 2^78470395 is an apocalyptic number.

78470395 is a deficient number, since it is larger than the sum of its proper divisors (15694085).

78470395 is a wasteful number, since it uses less digits than its factorization.

78470395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15694084.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 78470395 is about 8858.3517089806. The cubic root of 78470395 is about 428.1230521516.

The spelling of 78470395 in words is "seventy-eight million, four hundred seventy thousand, three hundred ninety-five".