275434409 has 4 divisors (see below), whose sum is σ = 275735040. Its totient is φ = 275133780.

The previous prime is 275434399. The next prime is 275434417. The reversal of 275434409 is 904434572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 275434409 - 2²⁰ = 274385833 is a prime.

It is a super-2 number, since 2×275434409² = 151728227322358562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (275434609) 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, 148937 + ... + 150774.

It is an arithmetic number, because the mean of its divisors is an integer number (68933760).

Almost surely, 2^275434409 is an apocalyptic number.

It is an amenable number.

275434409 is a deficient number, since it is larger than the sum of its proper divisors (300631).

275434409 is an equidigital number, since it uses as much as digits as its factorization.

275434409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300630.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 275434409 is about 16596.2167074306. The cubic root of 275434409 is about 650.6379606331.

The spelling of 275434409 in words is "two hundred seventy-five million, four hundred thirty-four thousand, four hundred nine".