3923138 has 8 divisors (see below), whose sum is σ = 5898000. Its totient is φ = 1957140.

The previous prime is 3923099. The next prime is 3923159. The reversal of 3923138 is 8313293.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3923138.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 968 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (737250).

Almost surely, 2^3923138 is an apocalyptic number.

3923138 is a deficient number, since it is larger than the sum of its proper divisors (1974862).

3923138 is a wasteful number, since it uses less digits than its factorization.

3923138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432.

The product of its digits is 3888, while the sum is 29.

The square root of 3923138 is about 1980.6912934630. The cubic root of 3923138 is about 157.7167654433.

It can be divided in two parts, 392 and 3138, that multiplied together give a triangular number (1230096 = T₁₅₆₈).

The spelling of 3923138 in words is "three million, nine hundred twenty-three thousand, one hundred thirty-eight".