39381331 has 8 divisors (see below), whose sum is σ = 43124400. Its totient is φ = 35665440.

The previous prime is 39381323. The next prime is 39381389. The reversal of 39381331 is 13318393.

39381331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 39381331 - 2³ = 39381323 is a prime.

It is a super-2 number, since 2×39381331² = 3101778462663122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39381293 and 39381302.

It is not an unprimeable number, because it can be changed into a prime (39381301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3696 + ... + 9613.

It is an arithmetic number, because the mean of its divisors is an integer number (5390550).

Almost surely, 2^39381331 is an apocalyptic number.

39381331 is a deficient number, since it is larger than the sum of its proper divisors (3743069).

39381331 is a wasteful number, since it uses less digits than its factorization.

39381331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13589.

The product of its digits is 5832, while the sum is 31.

The square root of 39381331 is about 6275.4546448843. The cubic root of 39381331 is about 340.2228383474. Note that the first 3 decimals are identical.

The spelling of 39381331 in words is "thirty-nine million, three hundred eighty-one thousand, three hundred thirty-one".