3925481279 has 4 divisors (see below), whose sum is σ = 3992014920. Its totient is φ = 3858947640.

The previous prime is 3925481269. The next prime is 3925481281. The reversal of 3925481279 is 9721845293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9721845293 = 61 ⋅159374513.

It is a cyclic number.

It is not a de Polignac number, because 3925481279 - 2²⁸ = 3657045823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925481269) 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, 33266732 + ... + 33266849.

It is an arithmetic number, because the mean of its divisors is an integer number (998003730).

Almost surely, 2^3925481279 is an apocalyptic number.

3925481279 is a deficient number, since it is larger than the sum of its proper divisors (66533641).

3925481279 is an equidigital number, since it uses as much as digits as its factorization.

3925481279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66533640.

The product of its digits is 1088640, while the sum is 50.

The square root of 3925481279 is about 62653.6613375467. The cubic root of 3925481279 is about 1577.4816044965.

The spelling of 3925481279 in words is "three billion, nine hundred twenty-five million, four hundred eighty-one thousand, two hundred seventy-nine".