3923919 has 12 divisors (see below), whose sum is σ = 5714176. Its totient is φ = 2594592.

The previous prime is 3923917. The next prime is 3923963. The reversal of 3923919 is 9193293.

It is not a de Polignac number, because 3923919 - 2¹ = 3923917 is a prime.

It is a super-4 number, since 4×3923919⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3923911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 574 + ... + 2859.

Almost surely, 2^3923919 is an apocalyptic number.

3923919 is a deficient number, since it is larger than the sum of its proper divisors (1790257).

3923919 is a wasteful number, since it uses less digits than its factorization.

3923919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566 (or 3563 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 3923919 is about 1980.8884370403. Note that the first 3 decimals coincide. The cubic root of 3923919 is about 157.7272305881.

The spelling of 3923919 in words is "three million, nine hundred twenty-three thousand, nine hundred nineteen".