3925279 has 2 divisors, whose sum is σ = 3925280. Its totient is φ = 3925278.

The previous prime is 3925277. The next prime is 3925297. The reversal of 3925279 is 9725293.

Together with next prime (3925297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3925279 - 2¹ = 3925277 is a prime.

Together with 3925277, it forms a pair of twin primes.

3925279 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3925277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962639 + 1962640.

It is an arithmetic number, because the mean of its divisors is an integer number (1962640).

Almost surely, 2^3925279 is an apocalyptic number.

3925279 is a deficient number, since it is larger than the sum of its proper divisors (1).

3925279 is an equidigital number, since it uses as much as digits as its factorization.

3925279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 3925279 is about 1981.2316876125. The cubic root of 3925279 is about 157.7454508296.

It can be divided in two parts, 392 and 5279, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 3925279 in words is "three million, nine hundred twenty-five thousand, two hundred seventy-nine".