2539169 has 4 divisors (see below), whose sum is σ = 2565444. Its totient is φ = 2512896.

The previous prime is 2539157. The next prime is 2539181. The reversal of 2539169 is 9619352.

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 (2539157) and next prime (2539181).

It can be written as a sum of positive squares in 2 ways, for example, as 1918225 + 620944 = 1385^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539169 - 2¹⁶ = 2473633 is a prime.

It is a super-2 number, since 2×2539169² = 12894758421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2539189) 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, 12992 + ... + 13185.

It is an arithmetic number, because the mean of its divisors is an integer number (641361).

2^2539169 is an apocalyptic number.

It is an amenable number.

2539169 is a deficient number, since it is larger than the sum of its proper divisors (26275).

2539169 is an equidigital number, since it uses as much as digits as its factorization.

2539169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26274.

The product of its digits is 14580, while the sum is 35.

The square root of 2539169 is about 1593.4770158368. The cubic root of 2539169 is about 136.4260177749.

The spelling of 2539169 in words is "two million, five hundred thirty-nine thousand, one hundred sixty-nine".