383903399880 has 512 divisors, whose sum is σ = 1718173900800. Its totient is φ = 73635609600.

The previous prime is 383903399839. The next prime is 383903399903. The reversal of 383903399880 is 88993309383.

383903399880 is a `hidden beast` number, since 3 + 83 + 90 + 3 + 399 + 8 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 903525 + ... + 1258635.

It is an arithmetic number, because the mean of its divisors is an integer number (3355808400).

Almost surely, 2^383903399880 is an apocalyptic number.

383903399880 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 383903399880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859086950400).

383903399880 is an abundant number, since it is smaller than the sum of its proper divisors (1334270500920).

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

383903399880 is a wasteful number, since it uses less digits than its factorization.

383903399880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355162 (or 355152 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 63.

The spelling of 383903399880 in words is "three hundred eighty-three billion, nine hundred three million, three hundred ninety-nine thousand, eight hundred eighty".