471997440 has 132 divisors (see below), whose sum is σ = 1635618504. Its totient is φ = 125853696.

The previous prime is 471997439. The next prime is 471997483. The reversal of 471997440 is 44799174.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40959 + ... + 51201.

Almost surely, 2^471997440 is an apocalyptic number.

471997440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 471997440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817809252).

471997440 is an abundant number, since it is smaller than the sum of its proper divisors (1163621064).

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

471997440 is a wasteful number, since it uses less digits than its factorization.

471997440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10274 (or 10253 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 471997440 is about 21725.5020655450. The cubic root of 471997440 is about 778.5978755350.

The spelling of 471997440 in words is "four hundred seventy-one million, nine hundred ninety-seven thousand, four hundred forty".