383983740 has 144 divisors (see below), whose sum is σ = 1380567552. Its totient is φ = 87759936.

The previous prime is 383983727. The next prime is 383983757. The reversal of 383983740 is 47389383.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28377 + ... + 39663.

Almost surely, 2^383983740 is an apocalyptic number.

383983740 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 383983740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690283776).

383983740 is an abundant number, since it is smaller than the sum of its proper divisors (996583812).

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

383983740 is a wasteful number, since it uses less digits than its factorization.

383983740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11318 (or 11304 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 383983740 is about 19595.5030555482. The cubic root of 383983740 is about 726.8379778280.

The spelling of 383983740 in words is "three hundred eighty-three million, nine hundred eighty-three thousand, seven hundred forty".