383927380 has 24 divisors (see below), whose sum is σ = 806730120. Its totient is φ = 153479040.

The previous prime is 383927363. The next prime is 383927387. The reversal of 383927380 is 83729383.

It can be written as a sum of positive squares in 4 ways, for example, as 198640836 + 185286544 = 14094^2 + 13612^2 .

It is a super-2 number, since 2×383927380² = 294800466227328800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383927387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35850 + ... + 45310.

It is an arithmetic number, because the mean of its divisors is an integer number (33613755).

Almost surely, 2^383927380 is an apocalyptic number.

It is an amenable number.

383927380 is an abundant number, since it is smaller than the sum of its proper divisors (422802740).

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

383927380 is a wasteful number, since it uses less digits than its factorization.

383927380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499 (or 11497 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 383927380 is about 19594.0649177244. The cubic root of 383927380 is about 726.8024150437.

The spelling of 383927380 in words is "three hundred eighty-three million, nine hundred twenty-seven thousand, three hundred eighty".