478472440 has 32 divisors (see below), whose sum is σ = 1133226000. Its totient is φ = 181315584.

The previous prime is 478472413. The next prime is 478472443. The reversal of 478472440 is 44274874.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 478472393 and 478472402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478472443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314025 + ... + 315544.

Almost surely, 2^478472440 is an apocalyptic number.

478472440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

478472440 is an abundant number, since it is smaller than the sum of its proper divisors (654753560).

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

478472440 is a wasteful number, since it uses less digits than its factorization.

478472440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629599 (or 629595 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 40.

The square root of 478472440 is about 21874.0128920141. The cubic root of 478472440 is about 782.1420629174.

The spelling of 478472440 in words is "four hundred seventy-eight million, four hundred seventy-two thousand, four hundred forty".