383940245 has 8 divisors (see below), whose sum is σ = 496169016. Its totient is φ = 283525056.

The previous prime is 383940241. The next prime is 383940253. The reversal of 383940245 is 542049383.

It can be written as a sum of positive squares in 4 ways, for example, as 8898289 + 375041956 = 2983^2 + 19366^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 383940245 - 2² = 383940241 is a prime.

It is a super-2 number, since 2×383940245² = 294820223461320050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 383940199 and 383940208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383940241) 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, 2953322 + ... + 2953451.

It is an arithmetic number, because the mean of its divisors is an integer number (62021127).

Almost surely, 2^383940245 is an apocalyptic number.

It is an amenable number.

383940245 is a deficient number, since it is larger than the sum of its proper divisors (112228771).

383940245 is a wasteful number, since it uses less digits than its factorization.

383940245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906791.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 383940245 is about 19594.3932031589. The cubic root of 383940245 is about 726.8105330795.

The spelling of 383940245 in words is "three hundred eighty-three million, nine hundred forty thousand, two hundred forty-five".