3925979 has 4 divisors (see below), whose sum is σ = 3935520. Its totient is φ = 3916440.

The previous prime is 3925973. The next prime is 3925981. The reversal of 3925979 is 9795293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9795293 = 751 ⋅13043.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3925979 is a prime.

It is a super-2 number, since 2×3925979² = 30826622216882, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3925973) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4124 + ... + 4985.

It is an arithmetic number, because the mean of its divisors is an integer number (983880).

Almost surely, 2^3925979 is an apocalyptic number.

3925979 is a deficient number, since it is larger than the sum of its proper divisors (9541).

3925979 is an equidigital number, since it uses as much as digits as its factorization.

3925979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540.

The product of its digits is 153090, while the sum is 44.

The square root of 3925979 is about 1981.4083375216. The cubic root of 3925979 is about 157.7548272546.

The spelling of 3925979 in words is "three million, nine hundred twenty-five thousand, nine hundred seventy-nine".