4253939 has 4 divisors (see below), whose sum is σ = 4334256. Its totient is φ = 4173624.

The previous prime is 4253917. The next prime is 4253941. The reversal of 4253939 is 9393524.

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

It is a cyclic number.

It is not a de Polignac number, because 4253939 - 2¹⁶ = 4188403 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁷ + 5³ + 3⁵ + 9 + 3¹⁰ + 9² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4253899 and 4253908.

It is not an unprimeable number, because it can be changed into a prime (4253969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40079 + ... + 40184.

It is an arithmetic number, because the mean of its divisors is an integer number (1083564).

Almost surely, 2^4253939 is an apocalyptic number.

4253939 is a deficient number, since it is larger than the sum of its proper divisors (80317).

4253939 is an equidigital number, since it uses as much as digits as its factorization.

4253939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80316.

The product of its digits is 29160, while the sum is 35.

The square root of 4253939 is about 2062.5079393787. The cubic root of 4253939 is about 162.0306170857.

The spelling of 4253939 in words is "four million, two hundred fifty-three thousand, nine hundred thirty-nine".