383797440 has 560 divisors, whose sum is σ = 1579973472. Its totient is φ = 87588864.

The previous prime is 383797399. The next prime is 383797451. The reversal of 383797440 is 44797383.

It is a happy number.

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 79 ways as a sum of consecutive naturals, for example, 5728287 + ... + 5728353.

Almost surely, 2^383797440 is an apocalyptic number.

383797440 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 383797440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789986736).

383797440 is an abundant number, since it is smaller than the sum of its proper divisors (1196176032).

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

383797440 is a wasteful number, since it uses less digits than its factorization.

383797440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 383797440 is about 19590.7488371425. The cubic root of 383797440 is about 726.7204105057.

The spelling of 383797440 in words is "three hundred eighty-three million, seven hundred ninety-seven thousand, four hundred forty".