199471440 has 160 divisors (see below), whose sum is σ = 726024960. Its totient is φ = 44347392.

The previous prime is 199471439. The next prime is 199471469. The reversal of 199471440 is 44174991.

199471440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60556 + ... + 63764.

It is an arithmetic number, because the mean of its divisors is an integer number (4537656).

Almost surely, 2^199471440 is an apocalyptic number.

199471440 is a gapful number since it is divisible by the number (10) 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 199471440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363012480).

199471440 is an abundant number, since it is smaller than the sum of its proper divisors (526553520).

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

199471440 is a wasteful number, since it uses less digits than its factorization.

199471440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 199471440 is about 14123.4358425986. The cubic root of 199471440 is about 584.2879202035.

The spelling of 199471440 in words is "one hundred ninety-nine million, four hundred seventy-one thousand, four hundred forty".