478147992 has 32 divisors (see below), whose sum is σ = 1366137600. Its totient is φ = 136613664.

The previous prime is 478147973. The next prime is 478147997. The reversal of 478147992 is 299741874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478147997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422892 + ... + 1423227.

It is an arithmetic number, because the mean of its divisors is an integer number (42691800).

Almost surely, 2^478147992 is an apocalyptic number.

478147992 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

478147992 is an abundant number, since it is smaller than the sum of its proper divisors (887989608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478147992 is a wasteful number, since it uses less digits than its factorization.

478147992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846135 (or 2846131 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 478147992 is about 21866.5953454121. The cubic root of 478147992 is about 781.9652350328.

The spelling of 478147992 in words is "four hundred seventy-eight million, one hundred forty-seven thousand, nine hundred ninety-two".