78471227 has 8 divisors (see below), whose sum is σ = 79613952. Its totient is φ = 77337000.

The previous prime is 78471221. The next prime is 78471241. The reversal of 78471227 is 72217487.

It is a happy number.

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 78471227 - 2¹⁴ = 78454843 is a prime.

It is a super-4 number, since 4×78471227⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78471221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17798 + ... + 21764.

It is an arithmetic number, because the mean of its divisors is an integer number (9951744).

Almost surely, 2^78471227 is an apocalyptic number.

78471227 is a deficient number, since it is larger than the sum of its proper divisors (1142725).

78471227 is a wasteful number, since it uses less digits than its factorization.

78471227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249.

The product of its digits is 43904, while the sum is 38.

The square root of 78471227 is about 8858.3986701886. The cubic root of 78471227 is about 428.1245652366.

It can be divided in two parts, 7847 and 1227, that multiplied together give a palindrome (9628269).

The spelling of 78471227 in words is "seventy-eight million, four hundred seventy-one thousand, two hundred twenty-seven".