3929873 has 4 divisors (see below), whose sum is σ = 4161060. Its totient is φ = 3698688.

The previous prime is 3929857. The next prime is 3929879. The reversal of 3929873 is 3789293.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1567504 + 2362369 = 1252^2 + 1537^2 .

It is a cyclic number.

It is not a de Polignac number, because 3929873 - 2⁴ = 3929857 is a prime.

It is a super-2 number, since 2×3929873² = 30887803592258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3929873.

It is not an unprimeable number, because it can be changed into a prime (3929879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115568 + ... + 115601.

It is an arithmetic number, because the mean of its divisors is an integer number (1040265).

Almost surely, 2^3929873 is an apocalyptic number.

It is an amenable number.

3929873 is a deficient number, since it is larger than the sum of its proper divisors (231187).

3929873 is a wasteful number, since it uses less digits than its factorization.

3929873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231186.

The product of its digits is 81648, while the sum is 41.

The square root of 3929873 is about 1982.3907283883. The cubic root of 3929873 is about 157.8069666328.

The spelling of 3929873 in words is "three million, nine hundred twenty-nine thousand, eight hundred seventy-three".