383139913 has 8 divisors (see below), whose sum is σ = 412799688. Its totient is φ = 353506944.

The previous prime is 383139901. The next prime is 383139937. The reversal of 383139913 is 319931383.

It can be written as a sum of positive squares in 4 ways, for example, as 52881984 + 330257929 = 7272^2 + 18173^2 .

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 383139913 - 2⁹ = 383139401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383139413) 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, 30795 + ... + 41407.

It is an arithmetic number, because the mean of its divisors is an integer number (51599961).

Almost surely, 2^383139913 is an apocalyptic number.

It is an amenable number.

383139913 is a deficient number, since it is larger than the sum of its proper divisors (29659775).

383139913 is a wasteful number, since it uses less digits than its factorization.

383139913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13403.

The product of its digits is 52488, while the sum is 40.

The square root of 383139913 is about 19573.9600745480. The cubic root of 383139913 is about 726.3051641793.

The spelling of 383139913 in words is "three hundred eighty-three million, one hundred thirty-nine thousand, nine hundred thirteen".