472978147 has 4 divisors (see below), whose sum is σ = 474407416. Its totient is φ = 471548880.

The previous prime is 472978123. The next prime is 472978157. The reversal of 472978147 is 741879274.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741879274 = 2 ⋅370939637.

It is a cyclic number.

It is not a de Polignac number, because 472978147 - 2¹¹ = 472976099 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 472978147.

It is not an unprimeable number, because it can be changed into a prime (472978157) 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 3 ways as a sum of consecutive naturals, for example, 714138 + ... + 714799.

It is an arithmetic number, because the mean of its divisors is an integer number (118601854).

Almost surely, 2^472978147 is an apocalyptic number.

472978147 is a deficient number, since it is larger than the sum of its proper divisors (1429269).

472978147 is a wasteful number, since it uses less digits than its factorization.

472978147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429268.

The product of its digits is 790272, while the sum is 49.

The square root of 472978147 is about 21748.0607641233. The cubic root of 472978147 is about 779.1367542687.

The spelling of 472978147 in words is "four hundred seventy-two million, nine hundred seventy-eight thousand, one hundred forty-seven".