475943940 has 144 divisors (see below), whose sum is σ = 1515150000. Its totient is φ = 120766464.

The previous prime is 475943929. The next prime is 475943971. The reversal of 475943940 is 49349574.

It is a happy number.

475943940 is a `hidden beast` number, since 475 + 94 + 3 + 94 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2359296 + 473584644 = 1536^2 + 21762^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 380436 + ... + 381684.

It is an arithmetic number, because the mean of its divisors is an integer number (10521875).

Almost surely, 2^475943940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 475943940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757575000).

475943940 is an abundant number, since it is smaller than the sum of its proper divisors (1039206060).

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

475943940 is a wasteful number, since it uses less digits than its factorization.

475943940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 475943940 is about 21816.1394384983. The cubic root of 475943940 is about 780.7618788532.

The spelling of 475943940 in words is "four hundred seventy-five million, nine hundred forty-three thousand, nine hundred forty".