3928293 has 6 divisors (see below), whose sum is σ = 5674214. Its totient is φ = 2618856.

The previous prime is 3928283. The next prime is 3928303.

3928293 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (3928283) and next prime (3928303).

It can be written as a sum of positive squares in only one way, i.e., 2566404 + 1361889 = 1602^2 + 1167^2 .

It is not a de Polignac number, because 3928293 - 2⁵ = 3928261 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

3928293 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218230 + ... + 218247.

Almost surely, 2^3928293 is an apocalyptic number.

It is an amenable number.

3928293 is a deficient number, since it is larger than the sum of its proper divisors (1745921).

3928293 is a wasteful number, since it uses less digits than its factorization.

3928293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436483 (or 436480 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3928293 is about 1981.9921796011. The cubic root of 3928293 is about 157.7858151070.

The spelling of 3928293 in words is "three million, nine hundred twenty-eight thousand, two hundred ninety-three".