2839225 has 9 divisors (see below), whose sum is σ = 3531117.
Its totient is φ = 2264640.
The previous prime is 2839217. The next prime is 2839271. The reversal of 2839225 is 5229382.
The square root of 2839225 is 1685.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 4 ways, for example, as 393129 + 2446096 = 627^2 + 1564^2
It is not a de Polignac number, because 2839225 - 23 = 2839217 is a prime.
It is a super-2 number, since 2×28392252 = 16122397201250, which contains 22 as substring.
It is a Duffinian number.
2839225 is a lucky number.
It is an unprimeable number.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8257 + ... + 8593.
22839225 is an apocalyptic number.
2839225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
2839225 is the 1685-th square number.
2839225 is the 843-rd centered octagonal number.
It is an amenable number.
2839225 is a deficient number, since it is larger than the sum of its proper divisors (691892).
2839225 is an frugal number, since it uses more digits than its factorization.
2839225 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 684 (or 342 counting only the distinct ones).
The product of its digits is 8640, while the sum is 31.
The cubic root of 2839225 is about 141.6010922969.
The spelling of 2839225 in words is "two million, eight hundred thirty-nine thousand, two hundred twenty-five".