4139285 has 4 divisors (see below), whose sum is σ = 4967148. Its totient is φ = 3311424.

The previous prime is 4139273. The next prime is 4139297. The reversal of 4139285 is 5829314.

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

It is an interprime number because it is at equal distance from previous prime (4139273) and next prime (4139297).

It can be written as a sum of positive squares in 2 ways, for example, as 552049 + 3587236 = 743^2 + 1894^2 .

It is a cyclic number.

It is not a de Polignac number, because 4139285 - 2⁶ = 4139221 is a prime.

It is a super-2 number, since 2×4139285² = 34267360622450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413924 + ... + 413933.

It is an arithmetic number, because the mean of its divisors is an integer number (1241787).

Almost surely, 2^4139285 is an apocalyptic number.

It is an amenable number.

4139285 is a deficient number, since it is larger than the sum of its proper divisors (827863).

4139285 is an equidigital number, since it uses as much as digits as its factorization.

4139285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827862.

The product of its digits is 8640, while the sum is 32.

The square root of 4139285 is about 2034.5232856864. The cubic root of 4139285 is about 160.5616330163.

The spelling of 4139285 in words is "four million, one hundred thirty-nine thousand, two hundred eighty-five".