383998860 has 384 divisors, whose sum is σ = 1470873600. Its totient is φ = 81285120.

The previous prime is 383998841. The next prime is 383998861. The reversal of 383998860 is 68899383.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 383998797 and 383998806.

It is not an unprimeable number, because it can be changed into a prime (383998861) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3398164 + ... + 3398276.

It is an arithmetic number, because the mean of its divisors is an integer number (3830400).

Almost surely, 2^383998860 is an apocalyptic number.

383998860 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 383998860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735436800).

383998860 is an abundant number, since it is smaller than the sum of its proper divisors (1086874740).

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

383998860 is a wasteful number, since it uses less digits than its factorization.

383998860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 383998860 is about 19595.8888545531. Note that the first 4 decimals coincide. The cubic root of 383998860 is about 726.8475178552.

The spelling of 383998860 in words is "three hundred eighty-three million, nine hundred ninety-eight thousand, eight hundred sixty".