3906392238 has 64 divisors (see below), whose sum is σ = 9999237120. Its totient is φ = 1107310176.

The previous prime is 3906392221. The next prime is 3906392257. The reversal of 3906392238 is 8322936093.

3906392238 is a `hidden beast` number, since 3 + 9 + 0 + 639 + 2 + 2 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3906392193 and 3906392202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7320 + ... + 88692.

It is an arithmetic number, because the mean of its divisors is an integer number (156238080).

Almost surely, 2^3906392238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3906392238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4999618560).

3906392238 is an abundant number, since it is smaller than the sum of its proper divisors (6092844882).

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

3906392238 is a wasteful number, since it uses less digits than its factorization.

3906392238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81518 (or 81512 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 3906392238 is about 62501.1378936416. The cubic root of 3906392238 is about 1574.9204277259.

The spelling of 3906392238 in words is "three billion, nine hundred six million, three hundred ninety-two thousand, two hundred thirty-eight".