383197440 has 144 divisors (see below), whose sum is σ = 1241509248. Its totient is φ = 100712448.

The previous prime is 383197429. The next prime is 383197469. The reversal of 383197440 is 44791383.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279637 + ... + 281003.

It is an arithmetic number, because the mean of its divisors is an integer number (8621592).

Almost surely, 2^383197440 is an apocalyptic number.

383197440 is a gapful number since it is divisible by the number (30) 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 383197440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620754624).

383197440 is an abundant number, since it is smaller than the sum of its proper divisors (858311808).

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

383197440 is a wasteful number, since it uses less digits than its factorization.

383197440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 383197440 is about 19575.4294972039. The cubic root of 383197440 is about 726.3415130124.

The spelling of 383197440 in words is "three hundred eighty-three million, one hundred ninety-seven thousand, four hundred forty".