275400009 has 6 divisors (see below), whose sum is σ = 397800026. Its totient is φ = 183600000.

The previous prime is 275399989. The next prime is 275400011. The reversal of 275400009 is 900004572.

It can be written as a sum of positive squares in only one way, i.e., 229431609 + 45968400 = 15147^2 + 6780^2 .

It is not a de Polignac number, because 275400009 - 2⁵ = 275399977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275400089) 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 5 ways as a sum of consecutive naturals, for example, 15299992 + ... + 15300009.

Almost surely, 2^275400009 is an apocalyptic number.

It is an amenable number.

275400009 is a deficient number, since it is larger than the sum of its proper divisors (122400017).

275400009 is a wasteful number, since it uses less digits than its factorization.

275400009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30600007 (or 30600004 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 275400009 is about 16595.1802942903. The cubic root of 275400009 is about 650.6108726623.

The spelling of 275400009 in words is "two hundred seventy-five million, four hundred thousand, nine".