78914427 has 4 divisors (see below), whose sum is σ = 105219240. Its totient is φ = 52609616.

The previous prime is 78914413. The next prime is 78914461. The reversal of 78914427 is 72441987.

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 78914427 - 2⁴ = 78914411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78914327) 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, 13152402 + ... + 13152407.

It is an arithmetic number, because the mean of its divisors is an integer number (26304810).

Almost surely, 2^78914427 is an apocalyptic number.

78914427 is a deficient number, since it is larger than the sum of its proper divisors (26304813).

78914427 is a wasteful number, since it uses less digits than its factorization.

78914427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26304812.

The product of its digits is 112896, while the sum is 42.

The square root of 78914427 is about 8883.3792556662. The cubic root of 78914427 is about 428.9290584222.

The spelling of 78914427 in words is "seventy-eight million, nine hundred fourteen thousand, four hundred twenty-seven".