383499940 has 48 divisors (see below), whose sum is σ = 854364672. Its totient is φ = 144098816.

The previous prime is 383499917. The next prime is 383499947. The reversal of 383499940 is 49994383.

It is not an unprimeable number, because it can be changed into a prime (383499947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292767 + ... + 294073.

It is an arithmetic number, because the mean of its divisors is an integer number (17799264).

Almost surely, 2^383499940 is an apocalyptic number.

It is an amenable number.

383499940 is an abundant number, since it is smaller than the sum of its proper divisors (470864732).

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

383499940 is a wasteful number, since it uses less digits than its factorization.

383499940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 383499940 is about 19583.1544956373. The cubic root of 383499940 is about 726.5325898952.

The spelling of 383499940 in words is "three hundred eighty-three million, four hundred ninety-nine thousand, nine hundred forty".